Physical Science Benchmark Review

Front

What does the law of conservation of mass state?

Back

The mass of the products of a chemical reaction are always equal to the mass of the reactants.

Tags

NGSS.MS-PS1-5

Front

How does a chlorine atom become a negatively charged ion?

Back

A chlorine atom becomes a negatively charged ion by gaining an electron.

Front

What effect does temperature have on the solubility of sugar in water?

Back

The greater the temperature of the water, the quicker the solute (sugar) will dissolve.

Tags

NGSS.MS-PS1-4

Front

What happens to water molecules when heated?

Back

Water molecules move faster near the bottom of the beaker where they are hotter, and then move slower as they cool and rise due to convection.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What occurs in a nuclear fusion reaction?

Back

In a nuclear fusion reaction, matter is converted to energy.

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Front

Define 'solubility'.

Back

Solubility is the ability of a substance (solute) to dissolve in a solvent at a given temperature and pressure.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

Explain the difference between ionic and covalent bonds.

Back

Ionic bonds are formed through the transfer of electrons from one atom to another, while covalent bonds are formed when two atoms share electrons.

Front

What is the role of temperature in chemical reactions?

Back

Temperature can affect the rate of chemical reactions; generally, higher temperatures increase reaction rates.

Tags

NGSS.HS-PS1-5

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Tags

NGSS.MS-ESS2-6