Name:_______________
Date:__________
1. A natural source of metal is called an ___.
2. A ________ speeds up a chemical reaction without being changed by it.
3. Burning is an example of a _______ change.
4. ____ ____________ _____ is a measure of how strong chemical bonds are.
5. The attraction of two oppositely charged ions creates the _____ bond.
6. Any chemical reaction which absorbs heat is called a __________ reaction.
7. Any chemical reaction which releases heat is called a _________ reaction.
8. _______ number is used to calculate the number of atoms in a mole.
9. ______ _ _ is the isotope on which the mole is based.
10. The ________ bond in one in which two or more atoms share electrons.
11. ________ is the name for the original substances in a chemical reaction.
12. _________ is the name for the new substance formed by the chemical reaction.
13. When a solid is formed in a chemical reaction between two liquids it is called a ___________.
14. A reaction in which an element in one compound is exchanged with an element in another compound is called a _____ reaction.
15. A chemical reaction in which a compound is formed from a combination of two or more elements or compounds is called a _________ reaction.
16. A reaction in which an element in one compound is replaced by another element is called a ______ replacement reaction.
17. ________ is the catalyst in the automobile catalytic converter.
18. The process of removing a metal from its ore is called _______.
19. antihistamines are an example of an _________.
20. _______ compounds composed of metal and oxygen.
21. A ________ ________ is used to summarize a chemical reaction.
22. The amount of energy needed to start a chemical reaction is called __________ energy.
23. A chemical reaction in which one or more of the reactants is used up is called a ________ reaction.
24. A chemical reaction in which some amount of each reactant remains is called an __________ reaction.
25. The energy of movement is called _______ energy.
26. A ____ is equal to the number of atoms needed to make a mass in grams equal to the atomic mass of that element.
27. A ______ _______ an example of a fast chemical reaction.
28. Iron _______ is an example of a very slow chemical reaction.
29. Any reaction in which a compound is broken down into two or more elements or compounds is called a ___________ reaction.
30. The ____ is the unit for measuring heat.