Atoms Lesson

The particles in the nucleus of an atom that do not have a charge (neutral)

• Proton

• Electron

• Neutron

• Ion

Tags

NGSS.MS-PS1-1

What characteristic is unique to each element and defines its chemical properties?

• The number of neutrons

• The number of electrons

• The number of protons

• The mass number

In a neutral atom, the number of electrons is equal to the number of _______.

• Neutrons

• Orbits

• Protons

• subatomic particles

Which is an electron?

• A

• B

• C

Tags

NGSS.MS-PS1-1

If there are more protons than electrons, the

atom is ______ charged.

• positively

• negatively

• neutral

If there are more electrons than protons, the atom is _______ charged.

• positively

• negatively

• neutral

_____ have a smaller mass than protons and neutrons.

• isotopes

• electrons

• ions

• breons

What determines the order of elements on today's periodic table?

• increasing atomic mass

• decreasing atomic mass

• increasing atomic number

• decreasing atomic number

From this element key of Nitrogen, determine the atomic mass of nitrogen

• 7

• 7.01

• 14.01

• 21.01

Tags

NGSS.MS-PS1-1

What is one similarity among elements in a group?

• atomic mass

• atomic weight

• chemical properties

• practical uses