Physical Science

Convection currents in the Earth's mantle cause:

• volcanic eruption

• plate tectonic movement

• climate change

• change in atmospheric pressure

Tags

NGSS.MS-ESS2-1

Which Earth layer has a dense, iron-rich composition?

• Core

• Crust

• Upper Mantle

• Lower Mantle

Which subatomic particles have mass that contribute to the atomic mass of the atom?

• neutrons and electrons

• protons and neutrons

• protons and electrons

• only protons

How many protons does this element have?

• 10

• 11

• 20

• 20.1797

Tags

NGSS.MS-PS1-1

What is the name of the family highlighted orange?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

What element is this?

Is it a metal or nonmetal?

• beryllium

  nonmetal

• beryllium

  metal

• lithium

  nonmetal

• lithium

  metal

Tags

NGSS.MS-PS1-1

What is the molar mass of SO₂? The atomic mass of sulfur is 32.06 and the atomic mass of oxygen is 16.00.

• 48.06 g/mol

• 64.06 g/mol

• 80.12 g/mol

• 512.96 g/mol

Tags

NGSS.MS-PS1-1

If 2 moles of H₂ react with nitrogen, how many moles of NH₃ are produced?

• 6 moles

• 3 moles

• 2 moles

• 1.33 moles

Tags

NGSS.MS-PS1-5

A sample of water has a mass of 45.05 grams. The molar mass of water is 18.02 g/mol. How many moles are in this sample?

• 4.5 moles

• 63.07 moles

• 2.5 moles

• 811.8 moles

Which subatomic particles contribute the most to the mass of an atom?

• Protons and Neutrons

• Protons only

• Electrons only

Tags

NGSS.MS-PS1-1