Physical Science Final Review

What is the definition of "Mole" as used in physical science?

• SI base unit of current

• The amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12

• A subatomic particle of about the same mass as a proton but without an electric charge

• A celestial body orbiting the earth or another planet

Which term is defined as "the system of electrons surrounding the nucleus of an atom"?

• Neutron

• Nucleus

• Electron Cloud

• Satellite

Tags

NGSS.MS-PS1-1

What does "Significant figure" refer to in scientific measurements?

• How close a measurement is to the true or accepted value

• The geological process by which earth materials are worn away

• Each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit

• A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy

What is described by the term "Fission"?

• A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy

• The laying down of sediment carried by wind, flowing water, the sea or ice

• The amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12

• A celestial body orbiting the earth or another planet

Tags

NGSS.HS-PS1-8

Which definition best matches the term "Erosion"?

• The geological process in which earth materials are worn away and transported by natural forces such as wind or water

• The system of electrons surrounding the nucleus of an atom

• How close measurements of the same item are to each other

• Material; may be solid or fluid

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

What is the molar mass of krypton?

• 83.80 g/mol

• 16.76 g/mol

• 167.6 g/mol

• 419 g/mol

Tags

NGSS.HS-PS1-1

How many atoms are in one mole of tungsten?

• 183.85 atoms

• 298 atoms

• 6.02 x 10^23 atoms

• 73 atoms

Tags

NGSS.MS-PS1-1

How many atoms are in 2 moles of Helium? Express your answer using scientific notation.

• 6.02 x 10^23

• 6.02 x 10^24

• 12.04 x 10^23

• 1.204 x 10^24

Tags

NGSS.MS-PS1-1

How many moles are in 465 grams of iron?

• 8.31

• 55.93

• 5.93 x 10^24

• 8.31 x 10^23

Tags

NGSS.MS-PS1-1

How many moles are in 987 grams of sulfur?

• 32.066 moles

• 32.066 moles

• 30.78 moles

• 3.078 x 10^24 atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-7