Matter and Periodic Table Recap 2020

A(n) _______________________ cannot be broken down into any other substance.

• mixture

• atom

• element

• compound

This picture represents which of the following?

• element
• compound
• mixture of elements
• mixture of compounds

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Tags

NGSS.MS-PS1-1

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

How many elements are represented in the compound?
Na₂CO₃

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagrams represent a pure substance ?

• I and II

• II , III and IV

• III and IV

• I, II, III, and IV

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

What is the picture displayed?

• atom

• element

• compound

• energy