Properties of Matter Quiz PS

An atom is:

• The smallest unit of a compound

• The smallest unit of an element that maintains its chemical properties

• The same as a molecule

• Always visible under a standard microscope

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Which statement about compounds is TRUE?

• They contain only one type of atom

• They can be separated by physical means

• They are formed by chemical bonds between different elements

• They have the same properties as their constituent elements

Which of the following is a pure substance?

• Salt water

• Air

• Oxygen gas

• Blood

Density is defined as:

• Mass divided by volume

• Volume divided by mass

• Mass times volume

• The amount of space an object occupies

The boiling point of a substance is the temperature at which:

• It changes from a solid to a liquid

• It changes from a liquid to a gas

• It changes from a gas to a liquid

• It changes from a solid to a gas

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Which is an example of a chemical change?

• Melting ice

• Cutting paper

• Rusting iron

• Dissolving sugar in water

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A homogeneous mixture is also called a:

• Compound

• Solution

• Suspension

• Element

A metal cube has a mass of 427 grams and measures 5.0 cm³ on each side. Calculate its density in g/cm³.

• 85.4 g/cm³

• 25 g/cm³

• 42 g/cm³

• 50 g/cm³

Which substance is likely to be a gas at room temperature (25°C)?

• Substance A

• Substance B

• Substance C

• Substance D

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