Elements, Compounds and Mixtures

H₂O is an example of a(n):

• A. element

• B. compound

• C. mixture

Tags

NGSS.MS-PS1-1

Au is an example of a(n):

• A. element

• B. compound

• C. mixture

The symbol H represents which element

• A. Helium

• B. Oxygen

• C. Hydrogen

Which of the following is the best description of an element?

• A substance that cannot be broken down into simpler substances

• A naturally occurring mineral made of more than one substances

• A small particle made with a specific chemical composition

• A collection of atoms that have different abilities when joined together

How many elements are in the compound Fe₂O₃?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

__ is a pure substance containing two or more kinds of atoms.

• Element

• compound

• mixture

• solution

MnMs

• element

• compound

• mixture

Table Salt (NaCl)

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

The smallest particle of an element; the smallest unit of matter.

• atom

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is the difference between an atom and a molecule?

• Molecules are groups of atoms held together physically

• Molecules are groups of atoms held together chemically

• Molecules are mixtures

• Molecules are only found in the gas state of matter, while atoms can form solids, liquids, and gasses

Tags

NGSS.MS-PS1-1