elements and compounds

choose A

• a
• b

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

• Element
• Mixture
• Compound
• Solids

What cannot be broken down into other substances?

• Compound
• Mixture
• Solids
• Element

A combination of substances that are not chemically combined is called a(n)____________. 

• mixture
• compound
• physical

Which of the following formulae represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

What is H₂SO₄ 
 made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen
• 1 hydrogen, 2 sulfur, 4 oxygen
• 2 hydrogen & 4 sodium
• 1 hydrogen & 6 sodium

• 1
• 2
• 3
• 4

• 1
• 2
• 3
• 4

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1