Matter

Which subatomic particle has almost no mass?

• proton

• neutron

• electron

According to the Octet Rule, how many electrons does an atom usually need to become stable?

• 1

• 4

• 8

• 18

Atoms of the same element that have gained or lost neutrons are called ____________

• ions

• quarks

• neutrinos

• isotopes

Tags

NGSS.HS-PS1-8

Atoms of the same element that have gained or lost electrons are called ________________

• ions

• quarks

• neutrinos

• isotopes

Which number represents the atomic mass of Boron?

• 10.811

• 12.011

• 14.007

• 15.999

Tags

NGSS.MS-PS1-1

Which number represents the atomic number of Boron?

• 5

• 6

• 7

• 8

Tags

NGSS.MS-PS1-1

An atom of Boron has ___ protons, ___ neutrons, and ___ electrons. (Refer to the diagram of Boron for help.)

• 5 protons, 6 neutrons, 5 electrons.

• 6 protons, 5 neutrons, 6 electrons.

• 5 protons, 5 neutrons, 6 electrons.

• 6 protons, 6 neutrons, 5 electrons.

Tags

NGSS.MS-PS1-1

Most elements on the periodic table are ________

• gases

• metals

• metalloids

• nonmetals

Which of these are mostly found on the right side of the periodic table?

• gases

• metals

• metalloids

Where are the metalloids located on the periodic table?

• On the left

• on the right

• on the bottom

• in between the metals and nonmetals