![Hero image](https://www.tes.com/cdn/app-resource-store/5d51d34/img/hero.jpg)
291Uploads
219k+Views
15k+Downloads
Primary science
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Earth Science - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is a fun and perfect way for helping your students review Earth Science.
The vocabulary words covered in this crossword are:
Fossil
Pangaea
Atmosphere
Climate
Weather
Greenhouse Effect
Global warming
Tectonic Plates
Continental Drift
Earthquake
Rock
Mineral
Volcano
Weathering
Erosion
Deposition
Groundwater
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Renewable and Nonrenewable Energy - Cut and Paste Worksheet Activity (Printable)
This cut and paste worksheet activity is the perfect way for helping your students learn and review Renewable and Nonrenewable Energy.
Key concepts:
Energy resources
Renewable energy
Nonrenewable energy
Nuclear energy
Wind energy
Solar energy
Hydroelectric energy
Geothermal energy
Biomass
Tidal energy
Coal
Oil
Natural gas
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Conductors and Insulators - Cut and Paste Worksheet Activity (Printable)
This cut and paste worksheet activity is the perfect way for helping your students learn and review conductors and insulators.
Answer key included.
Bundle Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Chemistry - Crossword Puzzle Worksheets Bundle (No Prep Printables)
Are you looking for no prep, printable, engaging, and fun Chemistry Puzzles for students to practice Chemistry vocabulary knowledge?
These puzzles are a great way for students to review Chemistry Vocabulary throughout the school year in many units and chapters. These puzzles can be used at various times throughout the year such as back to school, holidays, and the end of the school year! These puzzles are also great for assessing science concepts and encouraging problem-solving ability.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
States of Matter - Cut and Paste Sorting Worksheet Activity
This cut and paste worksheet activity is the perfect way for helping your students learn and review the States of Matter. Your students will love exploring solids, liquids, and gases with these fun, engaging activities.
Answer keys included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
End of the Year - Physical Science Activities | Puzzles & Worksheets, Printables
Are you looking for no prep, printable, engaging, and fun Physical Science Activities for the end of the year?
These activities are a great way for students to review Physical Science concepts throughout the school year in many units and chapters.
Physical Science Activities include 46 different resources:
14 Crossword Puzzles
12 Word Search Puzzles
14 Cut and Paste Worksheet Activities
6 Exit Tickets
This packet includes the following activities:
Physical Science - Word Search Puzzle
Introduction to Force - Crossword Puzzle
Force and Motion - Word Search Puzzle
Force, Types of Force - Exit Ticket
Contact and Non-Contact Forces - Cut and Paste Worksheet Activity
Balanced and Unbalanced Forces - Exit Ticket
Newton’s Laws of Motion - Crossword Puzzle
Newton’s Laws of Motion - Exit Ticket
Simple Machine - Crossword Puzzle
Forms of Energy - Exit Ticket
Forms of Energy - Crossword Puzzle
Types of Energy, Potential and Kinetic Energy - Cut and Paste Worksheet Activity
Energy Transformations - Cut and Paste Activity
Work, Energy, and Power - Word Search Puzzle
Earth’s Resources and Energy - Word Search Puzzle
Renewable and Nonrenewable Energy - Cut and Paste Worksheet Activity
Heat and Temperature - Word Search Puzzle
Heat Transfer - Cut and Paste Worksheet Activity
Electricity - Crossword Puzzle
Conductors and Insulators - Cut and Paste Worksheet Activity
Electric Circuits - Crossword Puzzle
Magnetic and Not Magnetic - Cut and Paste Worksheet Activity
Magnetism and Electromagnets - Crossword Puzzle
Properties of Waves - Word Search Puzzle
Waves, Sound, and Light - Word Search Puzzle
Transparent, Translucent, and Opaque - Cut and Paste Worksheet Activity
Electromagnetic Spectrum - Crossword Puzzle
Light, Mirrors, and Lenses - Word Search Puzzle
Chemistry - Word Search Puzzle
History of Atomic Theory - Cut and Paste Worksheet Activity
Atoms and Atomic Structure - Word Search Puzzle
Atoms, Molecules, and Ions - Word Search Puzzle
Elements, Compounds, and Mixtures - Cut and Paste Worksheet Activity
Mixtures and Solutions - Crossword Puzzle
Mixtures and Separating Mixtures - Crossword Puzzle
Periodic Table of Elements - Crossword Puzzle
Chemical Reactions - Crossword Puzzle
Properties of Matter - Crossword Puzzle
Chemical and Physical Properties of Matter - Exit Ticket
Classification of Matter - Cut and Paste Worksheet Activity
States of Matter - Cut and Paste Sorting Worksheet Activity
States of Matter and Phase Changes - Exit Ticket
Physical and Chemical Changes - Cut and Paste Worksheet Activity
Acids and Bases - Cut and Paste Worksheet Activity
Acids, Bases, and the pH Scale - Crossword Puzzle
Properties of Water - Word Search Puzzle
Printable PDFs with answer key.
These engaging worksheets and puzzles can easily be used as science class practice, test prep, morning work, early finisher work, homework assignments, quizzes, or assessments.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
End of the Year - Earth Science Activities | Puzzles & Worksheets, Printables
Are you looking for no prep, printable, engaging, and fun Earth Science Activities for the end of the year?
These activities are a great way for students to review Earth Science concepts and vocabulary throughout the school year in many units and chapters.
Earth Science Activities include 41 different resources:
16 Crossword Puzzles
14 Word Search Puzzles
7 Cut and Paste Worksheet Activities
4 Exit Tickets
This packet includes the following activities:
Earth Science - Word Search Puzzle
Geology - Word Search Puzzle
Layers of the Earth - Crossword Puzzle
Layers of the Earth - Exit Ticket Worksheet
Types of Rocks - Cut and Paste Worksheet Activity
Rocks and Minerals - Crossword Puzzle
Plate Tectonics, Continental Drift, and Pangaea - Word Search Puzzle
Labeling the Tectonic Plates - Cut and Paste Worksheet Activity
Earthquakes and Plate Tectonics - Crossword Puzzle
Volcanoes, Types of Volcanoes - Word Search Puzzle
The process of fossilization - Cut and Paste Worksheet Activity
Fossils, Types of Fossils - Crossword Puzzle
Geological Time Scale - Crossword Puzzle
Weathering, Erosion, and Deposition - Crossword Puzzle
Soil and Layers of Soil - Crossword Puzzle
Changes to Earth’s Surface - Crossword Puzzle
Landforms - Word Search Puzzle
Hydrosphere, Biosphere, Lithosphere & Atmosphere - Word Search Puzzle
Layers of the Atmosphere - Crossword Puzzle
Layers of the Atmosphere - Exit Ticket Worksheet
Water on Earth - Crossword Puzzle
Continents and Oceans - Word Search Puzzle
Earth’s Oceans - Word Search Puzzle
Ocean Life (Plankton, Nekton, Benthos) - Cut and Paste Worksheet Activity
Weather and Climate - Crossword Puzzle
Clouds, Types of Clouds - Word Search Puzzle
Cycles of Matter - Word Search Puzzle
Water Cycle, Groundwater, and Surface Water - Word Search Puzzle
Water Cycle - Exit Ticket Worksheet
Earth’s Resources and Energy - Word Search Puzzle
Global Warming and Climate Change - Crossword Puzzle
Astronomy - Crossword Puzzle
Stars, Galaxies, and the Universe - Crossword Puzzle
Solar System, Planets - Crossword Puzzle
Order of the Planets - Cut and Paste Worksheet Activity
Inner and Outer Planets - Cut and Paste Worksheet Activity
Planets of the Solar System - Exit Ticket Worksheet
Earth, Sun, and Moon - Word Search Puzzle
Motions of the Earth and the Seasons - Word Search Puzzle
Phases of the Moon - Cut and Paste Worksheet Activity
Stars and Constellations - Crossword Puzzle
Printable PDFs with answer key.
These engaging worksheets and puzzles can easily be used as science class practice, test prep, morning work, early finisher work, homework assignments, quizzes, or assessments.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Cell and Cell Organelles - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Cell and Cell Organelles.
The vocabulary words covered in this crossword are:
Cell
Cell membrane
Cell wall
Cytoplasm
Nucleus
Organelle
Ribosome
Endoplasmic reticulum
Golgi apparatus
Lysosome
Mitochondria
Vacuole
Chloroplast
Centrioles
Chlorophyll
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Back to School Earth Science Activities - Puzzles and Worksheets (Printables)
Looking for no prep, printable, fun, and engaging Back to School Earth Science activities?
These activities were designed to help your students enjoy Earth Science back to school season and throughout the year.
There are a total of 34 fun and engaging activities in this bundle:
3 Sets of Review Task Cards (Total of 116 task cards)
4 Review Exit Tickets
5 Cut and Paste Worksheet Activities
15 Word Search Puzzles
7 Crossword Puzzles
The pack contains the following activities:
Earth Science - Geology
Introduction to Earth Science - Review Task Cards (Science Worksheet)
Earth Science - Crossword Puzzle Activity
Famous Scientists - Cut and Paste Worksheet Activity
Geology - Crossword Puzzle Activity
Rocks, Rock Cycle and Minerals - Review Task Cards (Science Worksheet)
Layers of the Earth - Review Exit Ticket (Science Worksheet)
Earth’s Structure - Review Task Cards (Science Worksheet)
Plate Tectonics, Continental Drift, and Pangaea - Crossword Puzzle Activity
Plate Tectonics and Earthquakes - Word Search Puzzle Activity
Volcanoes, Types of Volcanoes - Word Search Puzzle Activity
Changes to Earth’s Surface - Word Search Puzzle Activity
Weathering, Erosion, and Deposition - Word Search Puzzle Activity
Soil and Layers of Soil - Word Search Puzzle Activity
Fossils, Types of Fossils - Word Search Puzzle Activity
The process of fossilization - Cut and Paste Worksheet Activity
Geological Time Scale - Word Search Puzzle Activity
Hydrosphere, Biosphere, Lithosphere, and Atmosphere - Crossword Puzzle Activity
Earth’s Resources and Energy - Word Search Puzzle Activity
Earth Science - Meteorology and Weather
19. Weather and Climate - Word Search Puzzle Activity
20. Layers of the Atmosphere - Review Exit Ticket (Science Worksheet)
21. Water on Earth - Word Search Puzzle Activity
22. Water Cycle - Review Exit Ticket (Science Worksheet)
23. Water Cycle, Groundwater, and Surface Water - Crossword Puzzle Activity
24. Global Warming and Climate Change - Word Search Puzzle Activity
25. Natural Disasters - Cut and Paste Worksheet Activity
Earth Science - Astronomy
26. Astronomy - Word Search Puzzle Activity
27. Stars, Galaxies, and the Universe - Word Search Puzzle Activity
28. Order of the Planets - Cut and Paste Worksheet Activity
29. Planets of the Solar System - Review Exit Ticket (Science Worksheet)
30. Earth, Sun, and Moon - Word Search Puzzle Activity
31. Moon Phases, Eclipses & Tides - Crossword Puzzle Activity
32. Phases of the Moon - Cut and Paste Worksheet Activity
33. Motions of the Earth and the Seasons - Crossword Puzzle Activity
34. Stars and Constellations - Word Search Puzzle Activity
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Life Science - Crossword Puzzle Worksheets Bundle (No Prep Printables)
Are you looking for no prep, printable, and fun life science puzzles for students to practice life science vocabulary skills?
This resource includes 25 engaging crossword puzzles. These are great for introducing and reinforcing concepts, practicing vocabulary, and encouraging problem-solving ability.
In this resource, you will receive the following crossword puzzles:
01 - Life Science - Crossword Puzzle Worksheet
02 - Characteristics of Living Things - Crossword Puzzle Worksheet
03 - Cell and Cell Organelles - Crossword Puzzle Worksheet
04 - Levels of Organization - Crossword Puzzle Worksheet
05 - Plant and Animal Cells - Crossword Puzzle Worksheet
06 - Cell Membrane and Cell Transport - Crossword Puzzle Worksheet
07 - Cell Cycle, Mitosis, and Meiosis - Crossword Puzzle Worksheet
08 - Sexual and Asexual Reproduction - Crossword Puzzle Worksheet
09 - Classification of Living Things - Crossword Puzzle Worksheet
10 - Viruses, Bacteria, Protists, and Fungi - Crossword Puzzle Worksheet
11 - Animal Classification - Crossword Puzzle Worksheet
12 - Plants and Plant Cells - Crossword Puzzle Worksheet
13 - Plant Reproduction and Pollination - Crossword Puzzle Worksheet
14 - Photosynthesis & Cellular Respiration - Crossword Puzzle Worksheet
15 - Human Body Systems: Organs - Crossword Puzzle Worksheet
16 - Human Digestive System - Crossword Puzzle Worksheet
17 - Human Excretory System - Crossword Puzzle Worksheet
18 - Human Respiratory System - Crossword Puzzle Worksheet
19 - Human Circulatory System - Crossword Puzzle Worksheet
20 - The Skeletal and Muscular Systems - Crossword Puzzle Worksheet
21 - Ecology and Ecosystems - Crossword Puzzle Worksheet
22 - Biomes, Habitats, and Ecosystems - Crossword Puzzle Worksheet
23 - Food Chains and Food Webs - Crossword Puzzle Worksheet
24 - Genetics - Crossword Puzzle Worksheet
25 - DNA, RNA, Genes, and Chromosomes - Crossword Puzzle Worksheet
Printable PDFs with answer key.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Earth Science - Crossword Puzzle Worksheets Bundle (No Prep Printables)
Are you looking for no prep, printable, and fun Earth Science Puzzles for students to practice Earth Science vocabulary skills?
This resource includes 25 engaging crossword puzzles. These are great for introducing and reinforcing concepts, practicing vocabulary, and encouraging problem-solving ability.
In this resource, you will receive the following crossword puzzles:
01 - Earth Science (Crossword Puzzle Worksheet)
02 - Geology (Crossword Puzzle Worksheet)
03 - Layers of the Earth (Crossword Puzzle Worksheet)
04 - Rocks and Minerals (Crossword Puzzle Worksheet)
05 - Earthquakes and Plate Tectonics (Crossword Puzzle Worksheet)
06 - Volcanoes, Types of Volcanoes (Crossword Puzzle Worksheet)
07 - Fossils, Types of Fossils (Crossword Puzzle Worksheet)
08 - Geological Time Scale (Crossword Puzzle Worksheet)
09 - Weathering, Erosion, and Deposition (Crossword Puzzle Worksheet)
10 - Changes to Earth’s Surface (Crossword Puzzle Worksheet)
11 - Soil and Layers of Soil (Crossword Puzzle Worksheet)
12 - Continents and Oceans (Crossword Puzzle Worksheet)
13 - Layers of the Atmosphere (Crossword Puzzle Worksheet)
14 - Weather and Climate (Crossword Puzzle Worksheet)
15 - Water on Earth (Crossword Puzzle Worksheet)
16 - Global Warming and Climate Change (Crossword Puzzle Worksheet)
17 - Renewable and Non-Renewable Energy (Crossword Puzzle Worksheet)
18 - Earth’s Resources and Energy (Crossword Puzzle Worksheet)
19 - Astronomy (Crossword Puzzle Worksheet)
20 - Stars, Galaxies, and the Universe (Crossword Puzzle Worksheet)
21 - Stars and Constellations (Crossword Puzzle Worksheet)
22 - Solar System, Planets (Crossword Puzzle Worksheet)
23 - Earth, Sun, and Moon (Crossword Puzzle Worksheet)
24 - Moon Phases, Eclipses & Tides (Crossword Puzzle Worksheet)
25 - Motions of the Earth and the Seasons (Crossword Puzzle Worksheet)
Printable PDFs with answer key.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Human Excretory System - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Human Excretory System.
The vocabulary words covered in this crossword are:
Excretion
Homeostasis
Kidney
Nephron
Ureters
Urinary Bladder
Urethra
Renal Artery
Renal Vein
Urea
Urine
Liver
Skin
Lung
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Human Respiratory System - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Human Respiratory System.
The vocabulary words covered in this crossword are:
Respiration
Carbon dioxide
Oxygen
Lungs
Diaphragm
Larynx
Pharynx
Epiglottis
Trachea
Bronchi
Alveoli
Capillaries
Inhale
Exhale
Diffusion
Hemoglobin
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Photosynthesis & Cellular Respiration - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Photosynthesis and Cellular Respiration.
The vocabulary words covered in this crossword are:
Chloroplast
Mitochondria
Photosynthesis
Stomata
Chlorophyll
Transpiration
ATP
Cellular Respiration
Glycolysis
Krebs Cycle
Anaerobic
Aerobic
Glucose
Oxygen
Autotroph
Carbon dioxide
Fermentation
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
DNA, RNA, Genes, and Chromosomes - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review DNA, RNA, Genes, and Chromosomes.
The vocabulary words covered in this crossword are:
DNA
RNA
Nucleotide
Double helix
Gene
Chromosomes
Thymine
Adenine
Cytosine
Guanine
Uracil
Deoxyribose
Ribose
James Watson
Francis Crick
Nucleus
Replication
Transcription
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Back to School Life Science Activities - Puzzles and Worksheets (Printables)
Looking for no prep, printable, fun, and engaging Back to School Life Science activities?
These activities were designed to help your students enjoy Life Science this back to school season and throughout the year.
There are a total of 38 fun and engaging activities in this bundle:
2 Sets of Review Task Cards (Total of 72 task cards)
11 Review Exit Tickets
5 Cut and Paste Worksheet Activities
13 Word Search Puzzles
7 Crossword Puzzles
The pack contains the following activities:
Life Science - Living Systems
Introduction to Life Science - Review Task Cards (Science Worksheet)
Life Science - Crossword Puzzle
Characteristics of Living Things - Crossword Puzzle
The Six Kingdoms of Life - Review Exit Ticket (Science Worksheet)
Viruses, Bacteria, Protists, and Fungi - Word Search Puzzle
Life Cycle of a Plant - Cut and Paste Worksheet Activity
Parts of a Plant - Review Exit Ticket (Science Worksheet)
Plant Reproduction and Pollination - Crossword Puzzle
Photosynthesis - Review Exit Ticket (Science Worksheet)
Animals (Vertebrate) Classification - Review Exit Ticket (Science Worksheet)
Vertebrates - Cut and Paste Sorting Activity
Animal Classification - Word Search Puzzle
Life Science - Cell Biology
Levels of Organization - Review Exit Ticket (Science Worksheet)
Cell Organelles - Review Exit Ticket (Science Worksheet)
Cell Organelles - Cut and Paste Worksheet Activity
Plant and Animal Cells - Crossword Puzzle
Cell Transport - Cut and Paste Worksheet Activity
Active and Passive Transport - Word Search Puzzle
Types of Cells in the Human Body - Review Exit Ticket (Science Worksheet)
Photosynthesis and Cellular Respiration - Word Search Puzzle
Life Science - Genetics
Genetics - Crossword Puzzle
DNA, RNA, Genes, and Chromosomes - Word Search Puzzle
DNA Structure & DNA Base Pairing - Cut and Paste Worksheet Activity
Sexual and Asexual Reproduction - Word Search Puzzle
Cell Cycle, Mitosis, and Meiosis - Word Search Puzzle
Life Science - The Human Body
Human Body Organs - Review Exit Ticket (Science Worksheet)
Human Body Systems: Organs - Crossword Puzzle
Human Digestive System - Word Search Puzzle
Human Respiratory System - Word Search Puzzle
Human Excretory System - Word Search Puzzle
Human Circulatory System - Word Search Puzzle
The Skeletal and Muscular Systems - Word Search Puzzle
Life Science - Ecology and Ecosystems
Ecosystems - Review Task Cards (Science Worksheet)
Components of Ecosystem - Review Exit Ticket (Science Worksheet) Food Chains and Food Webs - Crossword Puzzle
Biomes, Habitats, and Ecosystems - Word Search Puzzle
Ecological Relationships - Review Exit Ticket (Science Worksheet)
Ecological Succession - Crossword Puzzle
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Human Circulatory System - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Human Circulatory System.
The vocabulary words covered in this crossword are:
Heart
Blood
Aorta
Veins
Arteries
Capillaries
Systemic circulation
Pulmonary circulation
Atria
Ventricles
Hemoglobin
Plasma
Red blood cell
White blood cell
Platelet
Septum
Valve
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Cell Cycle, Mitosis, and Meiosis - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Cell Cycle, Mitosis, and Meiosis.
The vocabulary words covered in this crossword are:
Cell Cycle
Mitosis
Meiosis
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Gamete
Crossing over
Cell plate
Gene
Chromosomes
Chromatid
Centromere
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Periodic Table of Elements - Crossword Puzzle Worksheet Activity (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Periodic Table of Elements.
The vocabulary words covered in this crossword are:
Periodic Table
Element
Atomic number
Periods
Groups
Dmitri Mendeleev
Metals
Nonmetals
Metalloids
Alkali Metals
Transition Metals
Halogens
Noble gases
Reactivity
Iron
Gold
Silver
Answer key included.
Sale
![Ayse_Unk](https://d2w4qhtqw2dbsq.cloudfront.net/profile_live/27323117/small.jpg)
Atoms, Molecules, and Ions - Crossword Puzzle Worksheet (Printable)
This crossword puzzle is the perfect way for helping your students learn and review Atoms, Molecules, and Ions.
The vocabulary words covered in this crossword are:
Atom, proton, neutron, electron, ion, isotopes, atomic number, mass number, nucleus, cation, anion, element, compound, molecule, ionic bond, and covalent bond
Answer key included.