Chemistry Sem 1 Final Review

Front

What is the charge of an element with 5 protons and 7 electrons?

Back

-2

Front

What particle has a negative charge?

Back

Electron

Front

Why is an atom considered neutral?

Back

Because the number of protons equals the number of electrons.

Front

What is the correct measurement: 44.0 ml, 40.0 ml, 43.0 ml, or 50 ml?

Back

43.0 ml

Front

What is the charge and mass characteristic of the nucleus of an atom?

Back

The nucleus is positive and makes up most of the atom's mass.

Front

Define proton.

Back

A positively charged particle found in the nucleus of an atom.

Front

Define neutron.

Back

A neutral particle found in the nucleus of an atom.

Front

Define electron.

Back

A negatively charged particle that orbits the nucleus of an atom.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.