WorksheetsSubstances and Mixtures Worksheet Sep 29, 2025
Total questions: 20
Worksheet time: 10mins
Which of the following is explained by KMT?
Why solids have definite shapes
Why gases can expand to fill a container
Why liquids have definite volume but no definite shape
All of the above
Which state of matter takes both the shape and volume of its container?
Solid
Liquid
Gas
Crystal
A block of aluminum has a mass of 27 g and density of 2.7 g/cm³. What is its volume?
0.10 cm³
10.0 cm³
7.3 cm³
29.7 cm³
Which description best matches a liquid?
A. Particles locked in place with strong attraction
B. Particles far apart with almost no attraction
C. Particles slide past each other
Brass is made of copper and zinc melted together. Which classification best fits brass?
Element
Compound
Homogenous mixture
Heterogenous mixture
Which process is a chemical change?
Freezing water
Evaporating alcohol
Digesting food
Melting wax
Elements are substances that:
cannot be broken down into simpler substances by chemical means.
can be separated into different substances by physical means.
are always found in liquid form.
are mixtures of two or more substances.
Which change requires particles to overcome the greatest forces of attraction?
Melting solid to liquid
Freezing liquid to solid
Boiling liquid to gas
Condensing gas to liquid
Melting an ice cube is a:
Physical change
Chemical change
Formation of a compound
Example of decomposition
Which is NOT a mixture?
Blood
Air
Sodium chloride (NaCl)
Milk
Which of the following is a heterogenous mixture?
Trail mix
Salt water
Kool-aid
Milk
An unknown sample displaces 12.0 mL of water in a graduated cylinder. If its mass is 96 g, what is its density?
0.12 g/mL
1.2 g/mL
8.0 g/mL
12.0 g/mL
An object floats in water. Which conclusion can you make about its density?
Greater than 1.0 g/mL
Equal to 1.0 g/mL
Less than 1.0 g/mL
Which of the following is a compound?
Oxygen (O₂)
Hydrogen (H₂)
Water (H₂O)
Iron (Fe)
Which state of matter has definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
Which is an example of a heterogenous mixture?
Salt dissolved in water
Sand and iron filings
Air
Vinegar
A student crumbles a sheet of paper and burns part of it. Which option classifies both changes correctly?
Crumbling = chemical, burning = physical
Crumbling = physical, burning = chemical
Both = chemical
Both = physical
The density of a substance is defined as:
Mass ÷ Volume
Volume ÷ Mass
Weight ÷ Volume
Mass × Volume
Which of the following is a chemical property?
Density of mercury
Melting point of ice
Reactivity with acid
Conductivity of silver
A rock contains flecks of quartz, feldspar, and mica that can be seen with the naked eye. Which classification fits best?
Element
Compound
Homogenous mixture
Heterogenous mixture
