C.2 Unit 2 Exam Review

Front

What is the interaction between two objects with opposite electric charges?

Back

They attract each other.

Tags

NGSS.MS-PS2-3

Front

How does the molecular structure of water contribute to its ability to dissolve ionic compounds?

Back

Water molecules are polar and can surround and separate ions.

Front

Which two particles are attracted to each other in an atom?

Back

A proton and an electron.

Front

Why are metals considered good conductors of electricity?

Back

Metals have free electrons that can move easily.

Front

What causes a balloon to stick to a wall after being rubbed against hair?

Back

Electrostatic forces between the particles of the balloon and the particles of the wall.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

Define electric charge.

Back

Electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field.

Tags

NGSS.MS-PS2-3

Front

What is the difference between positive and negative charges?

Back

Positive charges repel other positive charges and attract negative charges, while negative charges repel other negative charges and attract positive charges.

Front

Explain the concept of polarity in molecules.

Back

Polarity in molecules refers to the distribution of electrical charge over the atoms in the molecule, leading to a molecule having a positive end and a negative end.

Front

What role do free electrons play in electrical conductivity?

Back

Free electrons allow for the flow of electric current through a material, making it a good conductor.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-3