Atoms and Elements Test

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Tags

NGSS.MS-PS1-1

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

Tags

NGSS.MS-PS1-1

________ are the COLUMNS on the periodic table and are organized by similar properties.

• Classifications
• Groups
• Periods
• Elements

A NEGATIVE subatomic particle is:

• Electron
• Neutron
• Proton
• Metal

Tags

NGSS.MS-PS2-3

A POSITIVE subatomic particle:

• Neutron
• Electron
• Atom
• Proton

Which statement does NOT describe the current model of an atom?

• Electrons are around the nucleus

• The nucleus is positively charged

• Electrons are inside a positively charged sphere

This has no charge

• Protons

• Neutrons

• Electrons

In the image above, HE is the elements_______

• Code

• Compounds

• Name

• Symbol

The number of protons + neutrons in an atomic nucleus is referred to as what?

• Atomic number

• Isotope number

• Mass number

Tags

NGSS.HS-PS1-8