CHEMISTRY
TEST
IS
TOMORROW
MARCH 5TH
100
A sample of water has a mass of 93 g. Sugar is added to the water, and the final solution weighs 138 g. How much sugar was added? A. 45 g B. 231 g. C. not enough information D. 131 g.
A. 45 g
100
In a chemical equation, the formulas to the right of the arrow represent the ? A. products B. mixture C. solution D. reactants
A. products
100
You can speed up a reaction if you break up a piece of alka-seltzer up into smaller pieces. Which factor does this describe? A. surface area B. reactivity C. mass D. density
A. surface area
100
The ability of a lake to freeze over in winter is a ? A. chemical change B. physical change C. chemical property D. physical property
D. physical property
100
Which of the following is considered a building block of matter/ A. molecules B. cement C. atom D. compounds
C. atom
200
In a chemical equation, the formulas to the left of the arrow represents the: a. mixture B. products C. reactants D. solution
C. REACTANTS
200
Which of the following is NOT matter? A. oxygen B. pebbles C. dirt D. sound
D. sound
200
Approximately how many atoms can fit across a human hair? A. 100,000 B. 1 million C. 10,000 D. 100
B. 1 million
200
When a newspaper clipping is left in direct sunlight for a few days, the paper begins to turn yellow. This is evidence of a ? A. physical property B. chemical change C. chemical property D. physical change
B. chemical change
200
3 example of physical changes are: A. boiling soup, can rusting, melting chocolate B. water freezing, breaking mirror, burning paper C. melting snow, cutting grass, carving wood D. app;lying mascura, making lemonade, baking bread
C. melting snow, cutting grass, carving wood
300
Which of the following is NOT part of an atom? A. electron B. positron C. neutron D. proton
B. positron
300
All elements have the same number of? A. protons B. neutrons C. none of the above D. electrons
C. none of the above
300
The ability of some fruit to change color when exposed to air is? A. chemical property B. physical property C. physical change D. chemical change
A. chemical property
300
When atoms rearrange and bond into new substances, the process is called? A. reaction B. explosion C. mixture D. physical change
A. reaction
300
Which of the following is NOT a possible sign of a chemical change? A. a change in state B. the release of a toxin C. the release of energy D. a change in color
A. a change in state
400
The measure of an object's volume is a? A. physical property B. chemical property C. chemical change D. physical change
A. physical property
400
Another name for a homogeneous mixture is a? A. liquid B. heterogeneous C. substance D. solution
D. solution
400
The shape of a pear is a? A. chemical change B. physical change C. chemical property D. physical property
D. physical property
400
Which of the following is NOT an aspect of density that can be used to separate mixtures? A. size independent B. amount of mass per unit volume C. objects with greater density sink in objects with less density D. attractive force
D. attractive force
400
When 2 or more substances combine so each substance can be separated by a physical means? A. mixture B. element C. compound D. chemical change
A. mixture
500
Which of the following is NOT a factor that effects the rate of a chemical reaction? A. temperature B. surface area C. pressure D. concentration
C. pressure
500
When wood burns in a fire/ A. a physical change has occurred B. new substances are formed C. mass is gained D. mass is lost
B. new substances are formed
500
The amount of substance in a certain volume is the? A. toxicity B. potency C. concentration D. density
C. concentration
500
Which of the following two, are not matter? A. sunlight B. moon C. force D. brick
A. sunlight C. force
500
What is the chart that lists all of the elements called?
the periodic table of elements
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