Elements vs Compounds

Which of the following is an element?

• H

• NaOH

• CO₂

• H₂O

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• H₂O

• Mg

• O

• C

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Elements are ____

• 2 or more atoms chemically combined

• represented with subscripts

• pure substances with 1 type of atom

• represented with multiple symbols together

Elements are represented---

(Choose all that are correct.)

• with a single symbol (may be 1 or 2 letters)

• on the periodic table

• with multiple symbols together

• with subscripts

Compounds have ----- than the original elements that make them up.

• different properties

• prettier colors

• longer names

• different symbols

Tags

NGSS.MS-PS1-2

Which of the following are true about compounds?

• They are represented with multiple element symbols together

• They contain subscripts

• They are represented on the periodic table

• They are in things we use everyday

Tags

NGSS.MS-PS1-1

Choose all the ELEMENTS below.

• Ca (Calcium)

• 
• 
• 

Tags

NGSS.MS-PS1-1

Choose all the COMPOUNDS below.

• 
• H₂O (Water)

• O (Oxygen)

• NaHCO₃ (Baking Soda)

• 

Tags

NGSS.MS-PS1-1