Elements vs. Compounds

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols is written correctly?

• ee
• hE
• C
• CL

Which of the following is a pure substance?

• CO
• C0₂
• Co
• H₂O

Tags

NGSS.MS-PS1-1

Which of the following is a pure substance?

• O₂
• Al₂CO₅
• C₆H₁₂O₆
• SiO₂

Tags

NGSS.MS-PS1-1

Which of the following atomic symbols for bromine is written correctly?

• bR
• BR
• Br
• br

Which of the following chemical formulas represents a compound? 

• C₃
• O₂
• CH₃CHO
• H₂

Tags

NGSS.MS-PS1-1

Can be found on the periodic table

• Element
• Compound
• MIxture

What is sugar?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

What is gold?

• element
• compound
• mixture

Tags

NGSS.HS-PS1-1

What is water?

• element
• compound
• mixture