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Compound And Molecules
Test Description: Grades 6-8 Physical Science
Instructions: Answer all questions to get your test result.
1) ___ are substances that CANNOT be broken down or separated into simpler substances.
A
minerals
B
mixtures
C
elements
D
compounds
2) An ___ is the smallest piece of an element that can exist.
A
subatomic particle
B
atom
C
molecule
D
proton
3) There are ___ (#) different types of elements.
A
92
B
millions of
C
3
D
118
4) A ___ is 2+ elements chemically combined together.
A
compound
B
mixture
C
element
D
mineral
5) A ___ is a group of atoms chemically bonded together.
A
molecule
B
atom
C
subatomic particle
D
superatomic particle
6) A ___ is the smallest piece of a compound that can exist.
A
atom
B
proton
C
molecule
D
subatomic particle
7) Water, salt, carbon dioxide, and sugar are examples of ___.
A
elements
B
compounds
C
mixtures
D
minerals
8) Iron, carbon, hydrogen and oxygen are examples of ___.
A
mixtures
B
compounds
C
elements
D
minerals
9) There are ___ (#) different types of compounds.
A
118
B
millions of
C
3
D
92
10) A chemical ___ is the force that hold the atoms in molecules together.
A
chain
B
bond
C
link
D
tie
11) ___ describes how something looks, feels, smells, tastes, or behaves.
A
chemical change
B
physical change
C
composition
D
propery
12) ___ describes the stuff that something is made from.
A
chemical change
B
physical change
C
composition
D
property
13) A ___ is a short, abbreviation for a compound - uses chemical symbols subscript numbers
A
chemical formula
B
chemical equation
C
atomic number
D
chemical symbol
14) Compounds have ___ the elements they are made from.
A
only the most important properties from
B
a combination of the properties of
C
the exact same properties as
D
different properties from
15) A ___ substance is made of only one type of particle.
A
mixed
B
pure
C
chemical
D
molecular
16) ___ is the chemical formula for water.
A
H2O
B
H2O2
C
CO2
D
NaCl
17) ___ is the chemical formula for carbon dioxide.
A
C6H12O6
B
C2O
C
CO
D
CO2
18) Compounds often form during ___.
A
chemical reactions
B
physical changes
C
accidents
D
physical reactions
19) Compounds are ___.
A
the simplest substances
B
chemically combines
C
physically mixed
D
physically blended
*select an answer for all questions
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