Compound And Molecules Question Preview (ID: 62227)
Grades 6-8
Physical Science.
TEACHERS: click here for quick copy question ID numbers.
___ are substances that CANNOT be broken down or separated into simpler substances.
a) elements
b) compounds
c) mixtures
d) minerals
An ___ is the smallest piece of an element that can exist.
a) atom
b) molecule
c) subatomic particle
d) proton
There are ___ (#) different types of elements.
a) 118
b) 92
c) 3
d) millions of
A ___ is 2+ elements chemically combined together.
a) compound
b) element
c) mixture
d) mineral
A ___ is a group of atoms chemically bonded together.
a) molecule
b) superatomic particle
c) atom
d) subatomic particle
A ___ is the smallest piece of a compound that can exist.
a) molecule
b) atom
c) subatomic particle
d) proton
Water, salt, carbon dioxide, and sugar are examples of ___.
a) compounds
b) elements
c) mixtures
d) minerals
Iron, carbon, hydrogen and oxygen are examples of ___.
a) elements
b) compounds
c) mixtures
d) minerals
There are ___ (#) different types of compounds.
a) millions of
b) 118
c) 92
d) 3
A chemical ___ is the force that hold the atoms in molecules together.
a) bond
b) chain
c) link
d) tie
___ describes how something looks, feels, smells, tastes, or behaves.
a) propery
b) composition
c) physical change
d) chemical change
___ describes the stuff that something is made from.
a) composition
b) property
c) physical change
d) chemical change
A ___ is a short, abbreviation for a compound - uses chemical symbols subscript numbers
a) chemical formula
b) chemical symbol
c) chemical equation
d) atomic number
Compounds have ___ the elements they are made from.
a) different properties from
b) the exact same properties as
c) a combination of the properties of
d) only the most important properties from
A ___ substance is made of only one type of particle.
a) pure
b) molecular
c) chemical
d) mixed
___ is the chemical formula for water.
a) H2O
b) CO2
c) NaCl
d) H2O2
___ is the chemical formula for carbon dioxide.
a) CO2
b) CO
c) C6H12O6
d) C2O
Compounds often form during ___.
a) chemical reactions
b) physical changes
c) physical reactions
d) accidents
Compounds are ___.
a) chemically combines
b) physically mixed
c) physically blended
d) the simplest substances
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