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