PASS Chem 4 Review: Question Preview (ID: 9419)


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Properties that are not always visible, can be recognized only when substances react chemically with one another.
a) physical properties
b) chemical changes
c) physical changes
d) chemical properties

Which of the following is NOT a rule for recognizing a PHYSICAL change?
a) color change
b) change in state of matter
c) change in shape
d) change in size

Which of the following is NOT a rule for recognizing a CHEMICAL change?
a) color change
b) temperature change
c) formation of a precipitate or gas
d) change in state of matter

What type of changes DO NOT change the identity of the substance?
a) physical change
b) chemical change
c) physical property
d) chemical property

What changes the identity of substances (when mixed together)?
a) physical change
b) chemical change
c) physical property
d) chemical property

What the solid formed when two or more liquids are mixed together?
a) gas
b) mixture
c) precipitate
d) liquid

Which of the following is an element?
a) oxygen
b) water
c) iron and sand
d) milk

Which of the following is a compound?
a) carbon dioxide
b) hydrogen
c) salt and pepper
d) Kool Aid

What is the chemical symbol for Iron?
a) Fe
b) I
c) N
d) Na

What is the chemical formula for salt?
a) C6H12O6 (all numbers should be subscripts)
b) CO2 (all numbers should be subscripts)
c) H2O (all numbers should be subscripts)
d) NaCl (all numbers should be subscripts)

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