Atoms and elements

What should you do if you break a glass test tube during lab?

• Pick up as many pieces as possible and sweep the rest up

• Sweep the glass up and put it in the trash

• Let the teacher know and put the broken glass in a designated safe container

• Leave it where it is to avoid injury

Which of the following are matter? (select all that are correct)

• atoms

• gas

• light

• heat

• humans

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

How big is the Earth?

•  $5.97\ x\ 10^{24}$   kg

•  $5.97\ x\ 10^{-24}$  kg

•  $5.97\ x\ 10$  kg

•  $5.97$  kg

Tags

NGSS.MS-ESS1-3

If you could cut a piece of aluminum foil smaller and smaller, what would be the smallest particle you could get and still have aluminum?

• a kilogram

• a compound

• an atom

• a centimeter

Tags

NGSS.MS-PS1-1

In the image of an atom, what are the blue particles?

• protons

• neutrons

• electrons

• orbitals

Tags

NGSS.MS-PS1-1

In the image of an atom, what are the red particles?

• protons

• neutrons

• electrons

• orbitals

Tags

NGSS.MS-PS1-1

What is the charge of a neutron?

• positive

• negative

• neutral

Tags

NGSS.MS-PS1-1

What is the mass of an electron?

• 1 AMU or Da

• -1 AMU or Da

• 1/1800 AMU or Da

• 10 AMU or Da

Tags

NGSS.MS-PS1-1

When Dmitri Mendeleev made the first periodic table, what did he use to organize the elements?

• solids and liquids

• protons and electrons

• charges and states of matter

• mass and properties

In the illustration of a periodic table, what is highlighted in yellow?

• a period

• a group

• a metal

• a molecule