Chemistry Exam Review

Front

What is the Lewis dot structure for Chlorine?

Back

The Lewis dot structure for Chlorine shows 7 valence electrons around the symbol Cl.

Front

How is the periodic table organized?

Back

The periodic table is organized by atomic numbers, which represent the number of protons in an atom.

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the variable that is affected by what is being tested.

Front

What is density?

Back

Density is the measure of mass per unit of volume.

Front

What happens to atoms during a chemical reaction?

Back

During a chemical reaction, atoms do not change from one type to another; they rearrange to form different groups of atoms.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between an independent variable and a dependent variable?

Back

The independent variable is the one that is changed or controlled in an experiment, while the dependent variable is the one that is measured.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid turns into vapor.

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.