Science

Which of the following represents an element?

• H₂O

• H

• NaCl

• CaCO₃

Salt has a chemical formula of NaCl.  Salt is a...

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-1

What is made up two or more elements that are chemically combined?

• Element
• Mixture
• Compound
• Solids

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

An element is made up of only one kind of _____.

• isotope
• plastic
• atom
• metal

COPPER

• C

• Ca

• Cu

• Cl

The chemical symbol for Helium is

• H
• Hg
• He
• O

Is the following an element or compound: CaCO₃?

• Element

• Compound

• Both

• Neither

Tags

NGSS.MS-PS1-1

When two or more elements chemically combine

• element

• compound

• mixture

• solution

Tags

NGSS.MS-PS1-1

Compounds are represented by a...

• Capital Letter
• Chemical symbol 
• Chemical formula 
• Chlorine