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NC Science EOG Chemistry Review #1
Test Description: NC Science EOG Chemistry review
Instructions: Answer all questions to get your test result.
1) Which is evidence that elements can combine to form a new compound?
A
pouring two liquids together to create a solid
B
melting a solid
C
freezing a liquid
D
moving a piece of metal with a magnet
2) Which property of metals allows them to be used to make coins with the same thickness?
A
malleability
B
electrical conductivity
C
specific heat
D
density
3) Which best describes why metals are used for making pots and pans that are used for cooking?
A
metals have high specific heats and high melting points
B
metals have high specific heats and low melting points
C
metals have low specific heats and low melting points
D
metals have low specific heats and high melting points
4) Which best describes the physical change of an aluminum soda can after it is crushed?
A
change in the weight
B
change in the volume
C
change in the specific heat
D
change in the mass
5) A chemical reaction produces two new substances, and each product has a mass of 25 grams. What was the total mass of the reactants??
A
100 grams
B
50 grams
C
75 grams
D
25 grams
6) Which factor best explains why some people will react differently than others to the same dose of an antibiotic?
A
individual susceptibility
B
individual exposure
C
low concentration
D
high potency
7) Which pure substance is composed of more than one element?
A
neon
B
water
C
nickel
D
gold
8) Which is the best way to determine if an object is made of pure silver?
A
test to see if the object is chemically reactive
B
compare the mass of the silver object to the mass of a piece of pure silver
C
determine the density of the object and compare to known density of pure silver
D
determine the solubility of the object
9) Which element is a poor conductor of heat?
A
Ag
B
F
C
K
D
Fe
10) A beaker with 100 mL of water is placed on a hot plate and heated. The water boils at 100. At what temperature would 90 mL of water boil?
A
90
B
10
C
110
D
100
*select an answer for all questions
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