Elements, Compounds, Mixtures

What is matter?

• Something that takes up space and has mass

• Something you can’t see or touch

• A type of energy

• A kind of gas

What is the smallest unit of matter?

• Molecule

• Atom

• Proton

• Electron

What are the three main forms of matter?

• Solid, liquid, gas

• Atom, molecule, element

• Proton, neutron, electron

• Ice, water, steam

Tags

NGSS.MS-PS1-4

What is the center of an atom called?

• Electron cloud

• Nucleus

• Proton

• Neutron

What determines the type of element an atom is?

• The number of electrons

• The number of neutrons

• The number of protons

• The size of the atom

What is an element?

• A mix of different substances

• A pure substance made of only one type of atom

• A combination of two or more substances

• A type of mixture

Which of these is an example of an element?

• Water (H₂O)

• Salt (NaCl)

• Oxygen (O₂)

• Air

What is a compound?

• A mix of different substances

• A mix of different substances

• A substance made of two or more elements chemically combined

• A type of element

Tags

NGSS.MS-PS1-1

Which of these is a compound?

• Gold (Au)

• Carbon (C)

• Water (H₂O)

• Trail mix

Tags

NGSS.MS-PS1-1

What is a mixture?

• A pure substance made of one type of atom

• A substance made of two or more elements chemically combined

• A combination of substances that can be separated easily

• A type of element