Matter, atoms, elements and more 2020

What is an element?

• Two or more atoms joined together.

• One of over 100 types of atoms

• Two or more different elements joined together.

• A particle with no charge found in the nucleus of an atom.

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

Tags

NGSS.MS-PS1-1

What is a compound?

• Two different elements bonded together.

• Two of the same elements bonded together.

• A mixture of different substances.

• Two substances stuck together with glue.

Tags

NGSS.MS-PS1-1

Which of the following is a chemical formula?

• H₂SO₄

• Si

• Hg

• C

Tags

NGSS.MS-PS1-1

Which of the following is a chemical symbol?

• H₂O

• O

• NaCl

• FeO

This is the smallest unit of an element.

• atom

• molecule

• compound

• nucleus

Tags

NGSS.MS-PS1-1

This is any combination of two or more atoms from different elements that are chemically combined.

• compound

• molecule

• element

• pure substance

Tags

NGSS.MS-PS1-1

This is the written out expression for a substance and contains each element in it and the number of atoms for that element.

• chemical formula

• chemical symbol

• The Periodic Table of Elements

• pure substance

This is something that contains that substance and nothing else.

• pure substance

• The Periodic Table of Elements

• chemical formula

• matter

This is a one or two letter representation of each element that is generally close to the element's name. The first letter of this will ALWAYS be capitalized.

• chemical symbol

• chemical number

• atomic number

• atomic mass