HChem Sem 1 Review

Front

What is the mass number?

Back

The mass number is the number of protons and neutrons in the nucleus.

Front

What is ionization energy?

Back

Ionization energy is how much energy it takes to remove an electron from an atom.

Front

What does the atomic number represent?

Back

The atomic number represents the number of protons in an element.

Front

What is the atomic number of an element with 9 protons?

Back

The atomic number is 9.

Front

What happens in the reaction: LiBr + Na?

Back

No reaction will occur.

Front

Define protons.

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

Define neutrons.

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What is an electron?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons.

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.