Study Guide for Chemistry Benchmark/Chemistry Unit Test

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

What does the atomic number indicate?

Back

The atomic number indicates the number of protons in the nucleus of an atom.

Front

What is the average atomic mass of Titanium?

Back

The average atomic mass of Titanium is 47.88.

Front

Which element has 36 protons?

Back

Krypton has 36 protons in its nucleus.

Front

What is the difference between a physical and chemical change?

Back

A physical change does not change the substance's chemical identity, while a chemical change does.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is the significance of protons in an atom?

Back

Protons determine the element's identity and its position on the periodic table.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stability of the nucleus.