CLMS Science 8 - Unit 2 Review

Front

What type of bonding occurs in sodium chloride (NaCl)?

Back

Ionic bonding occurs in sodium chloride (NaCl).

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat or light.

Front

What is the best method to separate a mixture of sugar and water?

Back

The best method to separate a mixture of sugar and water is evaporation.

Front

Which two elements have properties that are most similar?

Back

Elements B and C have properties that are most similar.

Front

What type of bonding occurs in sulfur tetrafluoride (S2F4)?

Back

Covalent bonding occurs in sulfur tetrafluoride (S2F4).

Front

Define ionic bonding.

Back

Ionic bonding is the electrostatic attraction between oppositely charged ions, typically formed when an electron is transferred from one atom to another.

Front

What is the difference between ionic and covalent bonding?

Back

Ionic bonding involves the transfer of electrons and the formation of charged ions, while covalent bonding involves the sharing of electrons between atoms.

Front

What is a characteristic of exothermic reactions?

Back

A characteristic of exothermic reactions is that they release heat, resulting in an increase in temperature of the surroundings.

Front

How can you identify an exothermic reaction in a laboratory setting?

Back

You can identify an exothermic reaction in a laboratory setting by feeling a temperature increase in the reaction mixture or observing heat being released.

Front

What is the process of evaporation?

Back

Evaporation is the process by which liquid turns into vapor, usually occurring at the surface of the liquid.