Chemistry

What are the building blocks of matter?

• elements

• compounds

• mixtures

• ions

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

__________ is anything that has mass and takes up space.

Tags

NGSS.HS-PS1-7

Who wrote the Atomic Theory that we use today?

• JJ Thomson

• Niels Bohr

• James Chadwick

• John Dalton

Which type of covalent bond occurs when electrons are shared unequally?

• nonpolar bond

• polar bond

• double bond

• triple bond

James Chadwick completed today's Atomic Model when he discovered the neutron.

• true

• false

Tags

NGSS.HS-PS1-8

Which group of elements are the LEAST reactive?

• alkali metals

• halogens

• metalloids

• noble gases

Atoms are the most stable when they have _____ valence electrons.

Tags

NGSS.HS-PS1-1

The periodic table is a material that is made of two or more elements and has the properties of a metal.

• true

• false

An ion that is made from more than one atom is known as a(n)

• double ion

• polyatomic ion

• element

• ionic bond

The following equation is balanced: CH₄ + 2O₂ -> CO₂ + 2H₂O

• true

• false

Tags

NGSS.MS-PS1-5