matter

What is the smallest unit of matter that makes up everything?

• Rock

• Atom

• Molecule

• Lego

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following is a molecule?

• H₂O

• O (oxygen atom)

• Na (sodium atom)

• French fries

Tags

NGSS.MS-PS1-1

A molecule of carbon dioxide (CO₂) has how many oxygen atoms?

• 1

• 2

• 3

• 22

Tags

NGSS.MS-PS1-1

What do atoms use to stick together?

• Chemical bonds

• chemical tape

• a line

• Super glue

A model shows two hydrogen atoms and one oxygen atom bonded together. What does it represent?

• CO₂

• H₂O

• NaCl

• Juice

Tags

NGSS.MS-PS1-1

Which is NOT made of molecules?

• Water

• Salt

• Oxygen gas

• Light

An oxygen molecule is written as O₂. What does the “2” mean?

• There are 2 molecules

• There are 2 oxygen atoms

• There are 2 protons only

• The oxygen is doubled in size

Tags

NGSS.MS-PS1-1

What is the difference between an atom and a molecule?

• Molecules are smaller than atoms

• Molecules are made of atoms

• Atoms are made of molecules

• Molecules are imaginary

Tags

NGSS.MS-PS1-1

What type of structure is sugar (C₆H₁₂O₆)?

• Simple molecule

• Extended crystal lattice

• Single atom

• Air

Tags

NGSS.MS-PS1-1

Which model best represents a molecule of methane (CH₄)?

• 1 carbon atom bonded to 4 hydrogen atoms

• 4 carbon atoms bonded to 1 hydrogen atom

• 5 hydrogen atoms only

• A triangle

Tags

NGSS.MS-PS1-1