Chemistry Midterm

Front

What is an atom?

Back

The smallest particle of matter that retains the properties of an element.

Front

What are negatively charged particles in an atom called?

Back

Electrons.

Front

What phase change occurs when water absorbs energy?

Back

Evaporation.

Front

What happens to atomic radii as you move down a group in the periodic table?

Back

Atomic radii increases.

Front

How does ionization energy change as you go down a group in the periodic table?

Back

Ionization energy decreases.

Front

What is a heterogeneous mixture?

Back

A mixture where the components are not uniformly distributed.

Front

What is a homogeneous mixture?

Back

A mixture where the components are uniformly distributed.

Front

What is the definition of a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.