1. Chapter 5
Vocab

2. Chemical Change:
A change that produces one or more new substances with new chemical properties
For example: Burning paper (combustion in general ) digestion of food, rusting, fireworks exploding, cooking an egg, any chemical reaction

3. Physical Change:
A change in which the appearance (physical properties) of a substance changes but its chemical properties stay the same.
Examples: Crushing a can, Melting an ice cube, Boiling water, Mixing sand and water, Breaking a glass, Dissolving sugar and water, Shredding paper, Chopping wood

4. Energy Level: One of the spaces around the nucleus of an atom in which an electron

5. Ion: An atom that has either a positive or negative change

6. Chemical Bond: The attractive force that holds atoms together

7. Subscript: A number in a formula that tells the number of atoms of an element in a compound

8. Radicals: A group of two or more atoms that acts like one atom
Lye is a an example the formula is NaOH. The OH is the radical
Compounds containing more then one radical are written with the radical in parentheses. Ba(OH)2

9. Chapter 6
How Matter Changes

10. A chemical change in which elements are combined or rearranged
Chemical Reaction
A chemical change in which elements are combined or rearranged

11. Mixture
A combination of substances in which no reaction takes place

12. Dissolve
To break apart

13. Solute
The substance that is dissolved in a solution

14. A mixture in which one substance is dissolved in another
Solution
A mixture in which one substance is dissolved in another

15. Solvent
A substance capable of dissolving one or more other substances

16. Chemical Equation
A statement that uses symbols, formulas, and numbers to stand for a chemical reaction.

17. A substance that is altered in a chemical reaction.
Reactant
A substance that is altered in a chemical reaction.

18. A substance that is formed in a chemical reactions
Product
A substance that is formed in a chemical reactions

19. Law of Conservation of Matter
Matter cannot be created or destroyed in chemical and common physical change

20. Balance
To keep the number of atoms the same on both sides of the equation.

21. Coefficient
A number placed before a formula in a chemical equation

22. A reaction in which elements combine to form a compound
Synthesis Reaction
A reaction in which elements combine to form a compound

23. Decomposition Reaction
A reaction in which a compound break down into two or more simple substance

24. Single Replacement Reaction
A reaction in which one element replaces another compound

25. Double Replacement Reaction
A reaction in which the elements in two compounds are exchanged

26. Precipitate
A solid that is formed and usually sinks to the bottom of a solution