Midterm Review 2024

Front

What is the melting point?

Back

The lowest temperature at which a substance begins to melt.

Front

What is the behavior of gas particles?

Back

Gas particles move easily in any direction and do not have a fixed volume or shape.

Front

What is condensation?

Back

Condensation is the process where water droplets form on the outside of a beverage container.

Front

What determines the identity of an element?

Back

The number of protons in an atom determines the identity of an element.

Front

How many valence electrons are in Group 15 elements?

Back

Elements in Group 15 of the periodic table have 5 valence electrons.

Front

Define 'solid' in terms of particle arrangement.

Back

In solids, particles are closely packed together and vibrate in fixed positions.

Front

What is the boiling point?

Back

The temperature at which a substance changes from a liquid to a gas.

Front

Explain the process of evaporation.

Back

Evaporation is the process where liquid turns into vapor at temperatures below its boiling point.

Front

What is a chemical change?

Back

A chemical change results in the formation of new substances with different properties.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.