Unit 1 Half Point Review

Front

What is a compound?

Back

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

Front

What is an example of a pure substance?

Back

Diamond is an example of a pure substance.

Front

What is a homogeneous mixture?

Back

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

Front

What is surface tension?

Back

Surface tension is the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.

Front

How does surface tension allow insects to walk on water?

Back

Surface tension creates a film on the water surface that can support small weights, allowing insects like water striders to walk on it.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

How many elements are in the periodic table?

Back

As of now, there are 118 confirmed elements in the periodic table.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

Front

What is the difference between a compound and a mixture?

Back

A compound is a chemical combination of elements, while a mixture is a physical combination of substances.

Front

What is an example of a heterogeneous mixture?

Back

Salad is an example of a heterogeneous mixture, as its components can be easily distinguished.