Unit Test 1 Review- Matter And Chemistry: Question Preview (ID: 10342)

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What characteristic of Aluminum allows it to be made into Aluminum foil?
a) It is dense
b) It is soluble
c) It is malleable
d) It is magnetic

Which pure substance is composed of more than one element?
a) Carbon
b) Gold
c) Water
d) Sodium

Which of the following would best explain why the mass of the reactants is greater than that of the products in a chemical reaction?
a) The reaction occurred in an open test tube and a gas was produced.
b) The reaction occurred in an open test tube and a solid was produced.
c) The reaction occurred in a closed test tube and the salinity of the reactants was high
d) The reaction occurred in a closed test tube, and the temperature of the reactants was low.

What is the best way to determine if an object is made of pure silver
a) determine the solubility of the object
b) test to see if the object is chemically reactive
c) determine the density of the object and compare to the known density of pure silver
d) compare the mass of the silver object to the mass of a piece of pure silver

Which is a naturally occurring chemical?
a) aspirin
b) salt
c) plastic
d) nylon

Which of the following would tell you an element is a poor conductor of heat?
a) The element is highly reactive.
b) The element is malleable
c) The element's location on the periodic table is left of the zigzag line
d) The element's location on the periodic table is right of the zigzag line

If 5 grams of chemical X and 10 grams of chemical Y combine, what is the most likely mass of chemical XY
a) 5 grams
b) 10 grams
c) 15 grams
d) 50 grams

How can a scientist using the periodic table find an element with properties similar to another element?
a) by comparing density
b) by finding its periodic group
c) by comparing malleability
d) by comparing atomic weight

The element silicon is best used for which purpose
a) as a container to keep coffee hot
b) as a semiconductor in computer chips
c) as a material to make airplane frames
d) as a malleable material for coins and jewelry

Which is an example of a physical change?
a) boiling
b) burning
c) rotting
d) rusting

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