Unit 2: Matter and Energy Review

Which of the following is a characteristic of solids?

• They have a definite shape and volume.

• They take the shape of their container.

• They expand to fill their container.

• They have no definite volume.

Which of the following best describes the particles in a gas?

• They are tightly packed and vibrate in place.

• They are close together but can move past each other.

• They are far apart and move freely.

• They are arranged in a fixed, repeating pattern.

Which of the following states of matter has particles that are arranged in a fixed, repeating pattern?

• Gas

• Liquid

• Solid

• Plasma

How do particles in a solid differ from those in a liquid?

• Particles in a solid are more spread out than in a liquid.

• Particles in a solid move freely, while those in a liquid are fixed.

• Particles in a solid are tightly packed and vibrate in place, while those in a liquid can move past each other.

• Particles in a solid have no definite volume, unlike those in a liquid.

An _______________ is made up of one or more of the same kind of atom chemically combined.

• atom

• element

• molecule

• compound

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

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Identify the following substance.

• Element

• Compound

• Mixture

• Diatomic Molecule