Physical Science-Benchmark #2 (1)

Front

What is a metalloid?

Back

A metalloid is an element that has properties of both metals and nonmetals.

Front

What is produced when a hydrocarbon undergoes combustion?

Back

Carbon dioxide is always produced when a hydrocarbon is burned.

Front

What characterizes Group 18 elements?

Back

Group 18 elements are chemically stable and nonreactive.

Front

What is dissociation in chemistry?

Back

Dissociation is the separation of ionic compounds into ions in water.

Front

What is the prefix for 8 atoms in a covalent compound?

Back

The prefix for 8 atoms is 'Octa-.'

Front

What is the primary characteristic of metals?

Back

Metals are typically good conductors of heat and electricity.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic).