What is the smallest unit of matter?

• Atom

• Ion

• Isotope

• Element

Tags

NGSS.MS-PS1-1

Which of these identifies a positively charged subatomic particle?

• Atom

• Proton

• Neutron

• Electron

Which of these identifies a negatively charged subatomic particle?

• Atom

• Proton

• Neutron

• Electron

Which of these identifies a neutral charged subatomic particle?

• Atom

• Proton

• Neutron

• Electron

The number on the Periodic Table for each individual Element that identifies the number of protons and the number of electrons (in a neutral atom) is known as which of the following?

• Atomic Number

• Atomic Mass

• Element Symbol

• Nucleus

Outermost electrons on an atomic structure are known as what?

• Isotopes

• Valence Electrons

• Nucleus

• Ions

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The image shown represents 3 different isotopes of Hydrogen. (H-1, H-2, and H-3)

Which answer choice is not true?

• Hydrogen - 1

  1 Proton

  0 Neutron

• Hydrogen - 2

  1 Proton

  1 Neutron

• Hydrogen - 3

  1 Proton

  2 Neutrons

• All the Hydrogen isotopes have the same number of protons and neutrons.

The atomic number is the total number of which two subatomic particles housed in the nucleus of an atom?

• Protons + Electrons

• Protons + Neutrons

• Neutrons + Electrons

• Neutrons + Ions

Group 1 on the Periodic Table is the Alkali Metals.

Group 17 on the Periodic Table is known as the Halogens.

When Group 1 and Group 17 react they create what?

• Salts

• Metals

• Nonmetals

• Gases

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Elements in Group 18 on the Periodic Table have a full outer energy level, because of this they are very unreactive. What is the name of this group on the Periodic Table?

• Noble Gases

• Halogens

• Alkali Metals

• Transition Metals