Physical Science Benchmark 1 Review

MOST elements on the periodic table are

• nonmetals

• gases

• metals

• rare earth elements

The atomic number of magnesium is 12. This means that its nucleus must contain

• 6 protons and 6 neutrons

• 6 neutrons and 6 electrons

• 12 neutrons and no protons

• 12 protons and no electrons

Tags

NGSS.MS-PS1-1

Which sub-atomic particle is positively charged and found in the nucleus?

• electron

• proton

• neutron

The elements from this section of the periodic table all belong to the same

• family

• group

• period

• valence

Positively-charged particles consisting of two protons and two neutrons emitted by radioactive materials are

• beta particles.

• gamma particles.

• positron particles

• alpha particles.

Tags

NGSS.HS-PS1-8

What is the number of protons in an atom of sodium?

• 11

• 11.98

• 12

• 23

Tags

NGSS.MS-PS1-1

What is the atomic number of the atom shown?

• 8

• 12

• 18

• 22

Tags

NGSS.MS-PS1-1

An atom of the element ________ has an average atomic mass of about 16 amu.

• oxygen

• sulfur

• nitrogen

• no elements have that mass

Tags

NGSS.MS-PS1-1

Twenty is the ______________ of potassium.

• charge

• atomic mass

• atomic number

• number of neutrons

The diagram shown is an example of the element

• nitrogen

• boron

• bromine

• sodium

Tags

NGSS.MS-PS1-1