Font size
WorksheetsGrade 8 Chemistry chapter 3
Total questions: 15
Worksheet time: 8mins
___________ are the smallest unit of an element that maintains the properties of that element.
Atoms
Elements
Compounds
Mixtures
True or False: elements AND compounds are pure substances.
True
False
A ______________ mixture is one that does not have a uniform composition.
heterogeneous
homogenous
pure substance
A _________________ mixture is one where the substances are evenly spread throughout.
heterogeneous
homogeneous
pure substance
Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.
heterogeneous
homogeneous
pure
Coffee, mouthwash, and vinegar are examples of __________________ mixtures.
heterogeneous
homogeneous
pure
Which of these is an element?
Salt (NaCl)
Water (H20)
Oxygen (O)
Carbon Dioxide (CO2)
Air is:
An element
A compound
A mixture
None of these
Which of the following is INCORRECT about pure substances?
formed by combining two or more components
have definite composition
all elements are pure substances
composed of only one kind of material
Pancake batter
pure substance
mixture
This is
a compound.
an element.
an atom.
a mixture.
Mixture or Pure Substance?
Mixture
Pure Substance
A substance with one or more elements combined in a specific ratio is a(n)
(a)
