Chapter 8 Atoms and Molecules (Periodic Table needed)

Electrons have a mass smaller to that of a neutron.

• True

• False

An atom contains an equal amount of protons and electrons.

• True

• False

Molecules are made up of two or more _____ that are chemically bonded.

Tags

NGSS.MS-PS1-1

How many atoms and elements in the molecule with this formula?

• 1 atom and 3 elements

• 2 elements and 2 atoms

• 2 element and 1 atom

• 2 atoms and 1 element

Tags

NGSS.MS-PS1-1

How many atoms and elements in the molecule with this formula?

• 3 atoms and 3 elements

• 4 atoms and 4 elements

• 4 elements and 2 atoms

• 2 atoms and 4 elements

Tags

NGSS.MS-PS1-1

How many atoms and elements in the molecule with this formula?

• 3 elements and 3 atoms

• 3 elements and 3 atoms

• 3 elements and 7 atoms

• 7 elements and s atoms

Tags

NGSS.MS-PS1-1

What is the relative mass of an proton?

• 1

• 0.5

• 1/1840

Which particle has a positive charge?

• Electron

• Neutron

• Quark

• Proton

what is the atomic number of sodium?

• 22

• 11

• 12

• 21

Which atomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Quark