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Chapter 4 Mixtures, Elements And Compounds
Test Description: Chapter 4 pretest
Instructions: Answer all questions to get your test result.
1) A molecule is..
A
made of 2 or more elements physically combined
B
chemically combined
C
used as a solvent
D
a heterogeneous mixture
2) Compounds are...
A
physically combined
B
pure substances that are made of more than one element
C
made of only one kind of atom
D
substances that cannot be broken down.
3) The substances that make up a mixture...
A
keep most of their properties
B
are chemically combined
C
are combined in definite proportions
D
lose most of their properties
4) An example of a homogeneous mixture is...
A
salt water
B
oil and vinegar dressing
C
concrete
D
a pile of salt and pepper
5) An example of a heterogeneous mixture is...
A
water
B
bronze
C
brass
D
concrete
6) The -Best Mixed- of all mixtures is a...
A
suspension
B
compound
C
heterogeneous mixture
D
solution
7) The smallest particle of an element that has the properties of that element is...
A
nucleus
B
atom
C
molecule
D
proton
8) Chemical symbols are...
A
a shorthand way of representing the chemical elements
B
used to classify elements
C
used only in the United States
D
used to distinguish one group from another
9) An alloy is...
A
chemically combined
B
a compound
C
a solution of gases
D
a solution of metals
10) The description of a chemical reaction using symbols and formulas is called a chemical...
A
property
B
statement
C
reaction
D
equation
*select an answer for all questions
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