Year 9 Chemistry
Across
- 1. Magnesium, Calcium, Strontium, Barium and Radium belong to group two
- 3. is from group 7 and so it can be classified as a nonmetal
- 5. particles are found orbiting the nucleus in shells electrons
- 7. are three main states of matter: Gas, liquid and _____ solid
- 9. group number to which Helium, Neon, Argon, Krypton, Xenon and Radon belong to is group eight
- 11. is found in this state gas
- 13. shells have letters assigned to them. Therefore, an element with four shells will have ____ shells klmn
- 14. that are made up of more than one type of atom that is not in a fixed ratio is called a mixture
- 16. from groups 5-8 tend to form negatively charged ions anions
- 17. is from group 2 and so it can be classified as a metal
Down
- 2. protons and neutrons are found inside these atoms
- 4. electrons jump back to their original shell, they release energy in the form of light
- 6. Lithium, Sodium, Potassium, Rubidium, Caesium and Francium belong to group one
- 8. is commonly found in this state gas
- 10. alloy is a _______ of metals
- 12. is found in this state metal
- 15. is classified as this metalloid
- 18. negatively charged ion is called an anion
- 19. Boron is from period 2 then it means it has ___ electron shells two