Chemistry Test

Topics: Proton, Chemical element, Neutron Pages: 3 (792 words) Published: January 15, 2014
Test #3
Chapter 2:
1) What is matter?
2) What is mass?
3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box.

6) What is the difference between gas and vapor?
7) What is a physical change? Give an example.
8) A physical blend of two or more substances is called a _______. 9) There are two basic types of mixtures. Name them, explain, and give examples. 10) Another name for homogenous mixture is _______.

11) Any part of a system with uniform composition and properties is called a _______. 12) Homogenous mixtures have how many phases?
13) There are several ways to separate mixtures. One way is called distillation. Explain the process. (pg.34) 14) What two groups are substances classified? Explain each. 15) What is a chemical reaction? Can it be separated afterwards? 16) What is the law of conservation of mass? The mass of products has to _____ the mass of reactants. Chapter 5:

17) ______ are little, basic particles that make up matter.
18) Dalton's Atomic Theory:
I. All elements composed of ______.
II. Atoms of the same element are ______. The atoms of one element are different from those of any other element. III. Atoms of different elements can physically mix together or can chemically combine with one another in simple ______ ______ _______ to form compounds. IV. Chemical reactions occur when atoms are separated, joined, or rearranged. Atoms of one element, however are ______ changed into the atoms of another element. 19) What three parts of Dalton's Atomic Theory have been adjusted and why?

20) What is the picture to the right displaying? Who did
this experiment? What was discovered from this?
21) E. Goldstein discovered _____ _____ were rays travelling in the opposite...
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