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Science
6th -
8thgrade
Chemistry Practice - Identifying elements, compounds, and mixtures
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28 questions
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- Multiple ChoicePlease save your changes before editing any questions.
A substance that contains all the same type of atom is:
An element
A compound
A heterogeneous mixture
A homogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.
A substance that is composed of two or more elements chemically combined in an exact proportion:
An element
A compound
A heterogeneous mixture
A homogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.
TRUE OR FALSE: Substances in a mixture keep their original properties.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
TRUE OR FALSE: Elements in a compound keep the same properties as the elements on their own.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
Atoms of an element
Molecules of an element
A compound
A mixture of elements
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
Atoms of an element
Molecules of an element
A compound
A mixture of compounds
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
Atoms of an element
Molecules of an element
A compound
A mixture of elements
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
An element
A compound
A mixture of elements
A mixture of elements and a compound
- Multiple ChoicePlease save your changes before editing any questions.
The smallest unit of an element that keeps the same properties of that element is a(n):
Electron
Atom
Molecule
Compound
- Multiple ChoicePlease save your changes before editing any questions.
The smallest unit of a compound that keeps the same properties of that compound is a(n):
Electron
Atom
Molecule
Element
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
A compound
A mixture of elements
A mixture of a compound and an element
A mixture of compounds
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
A compound
A mixture of elements
A mixture of a compound and an element
A mixture of compounds
- Multiple ChoicePlease save your changes before editing any questions.
This model best represents:
A compound
A mixture of elements
A mixture of a compound and an element
A mixture of compounds
- Multiple ChoicePlease save your changes before editing any questions.
CHOOSE ALL THAT APPLY: This model shows...
Individual atoms
Molecules
An element
A compound
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is not made of matter?
Air
Water
Energy
Carbon dioxide
- Multiple ChoicePlease save your changes before editing any questions.
Water (H2O) is an example of a(n):
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Glucose (C6H12O6) is an example of a(n):
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Rust (Fe2O3) is an example of a(n):
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Carbon (C) is an example of a(n):
Element
Compound
Heterogeneous Mixture
Homogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Salt dissolved in water is an example of a(n):
Solution
Compound
Heterogeneous Mixture
Homogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Mud and rocks is an example of a(n):
Element
Compound
Heterogeneous Mixture
Homogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Bronze is an example of a(n):
Element
Compound
Heterogeneous Mixture
Homogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Air is an example of a(n):
Element
Compound
Mixture
Solution
- Multiple ChoicePlease save your changes before editing any questions.
Trail mix is an example of a(n):
Element
Compound
Heterogeneous Mixture
Homogeneous Mixture
- Multiple ChoicePlease save your changes before editing any questions.
Carbon dioxide (CO2) is an example of:
An element
A compound
A mixture
A solution
- Multiple ChoicePlease save your changes before editing any questions.
CHALLENGE: Oxygen (O2) is an example of a(n):
Element
Organic compound
Inorganic compound
Mixture of elements
- Multiple ChoicePlease save your changes before editing any questions.
CHALLENGE: Water (H2O) is an example of a(n):
Element
Organic compound
Inorganic compound
Mixture of elements
- Multiple ChoicePlease save your changes before editing any questions.
CHALLENGE: Glucose (C6H12O6) is an example of a(n):
Element
Organic compound
Inorganic compound
Mixture of elements