Exploring Elements, Compounds, and Mixtures

What is the smallest building block of matter?

• Element

• Molecule

• Atom

• Compound

Which of the following is a molecule?

• O2

• Fe

• Na

• H

Tags

NGSS.MS-PS1-1

What determines the name of an atom?

• Number of electrons

• Number of neutrons

• Number of protons

• Number of molecules

Which of the following is an element?

• CO2

• H2O

• CH4

• O2

What is a compound?

• A group of molecules

• Two or more different atoms bonded together

• A mixture of elements

• A single type of atom

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• O2

• H2O

• N2

• Fe

Tags

NGSS.MS-PS1-1

What are elements and compounds considered as?

• Pure substances

• Solutions

• Impure substances

• Mixtures

Which of the following is NOT a pure substance?

• Element

• Compound

• Mixture

• Molecule

What is a mixture?

• A pure substance

• A combination of elements or compounds not chemically bonded

• A single type of molecule

• A single type of atom

Which of the following is an example of a mixture?

• Methane (CH4)

• Air

• Carbon dioxide (CO2)

• Water (H2O)