Unit 2: Chemistry Review

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is a homogeneous solution?

Back

A homogeneous solution is a mixture that has a uniform composition throughout, meaning the different components are not distinguishable.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the different components can be seen and easily separated.

Front

What is filtration?

Back

Filtration is a physical separation method used to separate solids from liquids or gases using a filter.

Front

What is evaporation?

Back

Evaporation is the process of turning from liquid into vapor, often used to separate a dissolved solid from a liquid.

Front

What is malleability?

Back

Malleability is the ability of a material to be hammered or pressed into thin sheets without breaking.

Front

What is the definition of a liquid?

Back

A liquid has a definite volume but takes the shape of its container, meaning it has an indefinite shape.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.