Chemistry Puzzle

123456789101112131415161718
Across
  1. 2. What substances are formed when acids react with bases?
  2. 3. What do we call a substance made of different elements chemically joined?
  3. 7. What do we call a combination of substances that are not chemically joined?
  4. 8. What do we call the elements that make up a substance?
  5. 11. Which negatively charged particles move around the nucleus?
  6. 14. What substances taste sour and turn blue litmus red?
  7. 15. Which positively charged particles are found in the nucleus?
  8. 17. What is the central part of an atom called?
Down
  1. 1. What do we call the reaction between an acid and a base?
  2. 4. What do we call the new substances formed after a chemical reaction?
  3. 5. Which neutral particles are found in the nucleus?
  4. 6. What is the smallest part of an element?
  5. 9. What do we call two or more atoms joined together?
  6. 10. substance What do we call any material that has a specific composition?
  7. 12. What do we call a mixture where one substance dissolves in another?
  8. 13. What do we call the substances that react in a chemical reaction?
  9. 16. What substances feel slippery and turn red litmus blue?
  10. 18. reaction What do we call a process where substances change into new substances?