Elements, Compounds, Mixture

Which of the following could be a symbol on the periodic table of elements?

• JZ

• jz

• Jz

• jZ

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-4

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

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

• Element
• Mixture
• Compound
• Solids

Tags

NGSS.MS-PS1-1

How many elements are represented in the compound?

Na₂CO₃

• 2

• 4

• 3

• 5

What is the difference between Co and CO?

• CO is an element but Co is a compound

• Nothing is different. They are the same thing.

• CO is two elements and Co is only one element

• CO is a mixture but Co is an element.

Which one is a compound?

• Ni

• F

• Hg

• KI

How many atoms are there in this compound?

• 12

• 3

• 24

• 6

"Na" is the element's

• Chemical Formula

• Compound

• Name

• Chemical Symbol

Tags

NGSS.MS-PS1-1

How many elements are in this compound?

• 13

• 6

• 4

• 3

Tags

NGSS.MS-PS1-1