CHEMISTRY 1 TEST REVIEW. 1. Label the parts of the atom below. electron neutron proton nucleus.
-
Upload
stewart-rodgers -
Category
Documents
-
view
215 -
download
2
Transcript of CHEMISTRY 1 TEST REVIEW. 1. Label the parts of the atom below. electron neutron proton nucleus.
CHEMISTRY 1 TEST REVIEW
1. Label the parts of the atom below.
electron
neutron
proton
nucleus
2. All matter is made up of
a. cells b. atoms c. molecules d. compounds
3. Which of the following is not an element?
a. Cl c. NaClb. N d. Na
4. A positively charged particle is
a. an electron c. a neutron
b. a proton d. an isotope
5. Which of the following would be found outside the nucleus of an atom?
a. protons b. electrons c. neutrons d. protons and neutrons
6. A chemical formula like CO2 represents
a. an element c. an atom
b. an electron d. a compound
7. A substance made up of two or more elements that have chemically combined is
a. a mixture c. an atom
b. a compound d. an element
8. A substance that cannot be changed into simpler substances by a chemical change is called a (an)
a. element. c. liquid.b. solid. d. mixture.
9. Al, Cu, N, and O are symbols for
a. compounds. c. elements.
b. mixtures. d. molecules.
10. When 2 or more substances are physically combined, a(n) _____ is produced
a. compound c. elementb. mixture d. molecule
11. The smallest part of a compound is called a(n)
a. compound c. elementb. mixture d. molecule
12. Sand and iron particles that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles?
a. Use tweezers to separate them. b. Add water to the mixture.c. Use a magnet to separate them. d. Pour the mixture into a filter.
13. Identify each example below as a physical or chemical property:
a. The object has a mass of 5gmb. Sodium reacts with water.c. Silver is a shiny metal.d. The iron rusts when exposed to
water.e. The fabric is flammable.f. Mercury is a liquid at room
temperature.
PHYSICAL
CHEMICAL
PHYSICAL
CHEMICAL
CHEMICAL
PHYSICAL
14. PHYSICAL OR CHEMICAL CHANGE?
PHYSICAL
15. PHYSICAL OR CHEMICAL CHANGE?
CHEMICAL
16. PHYSICAL OR CHEMICAL CHANGE?
CHEMICAL
17. PHYSICAL OR CHEMICAL CHANGE?
PHYSICAL
18. Identify the solid, liquid and gas! Explain your answer.
GasMolecules very far apart
SolidMolecules packed close together
LiquidMolecules a little farther apart
19. The particles of a substance are closest together in
a. a solid b. a liquid c. a gas d. plasma
20. The particles of a substance move the fastest in
a. a solid b. a liquid c. a gas
21. The particles of a substance that does not have a definite volume or shape is
a. a solid c. a liquid b. a gas d. plasma
22. When a liquid becomes a solid,
a. it meltsb. it condensesc. it freezesd. it evaporates
23. _______ is the process in which liquid changes to gas.
a. Sublimation c. Condensation
b. Evaporation d. Melting
24. The change of a solid to a gas is called
a. freezing c. meltingb. sublimation d.
vaporization
25. When substances go directly from the solid phase to the gas phase, the phase change is called
a. sublimation c. condensation
b. evaporation d. vaporization