6.6CE Review Metals, Nonmetals, Metalloids and Chemical Changes

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often accompanied by energy changes, color changes, gas production, or precipitate formation.

Front

Give an example of a chemical change.

Back

Frying an egg.

Front

What is a metalloid?

Back

An element that has properties of both metals and nonmetals, can conduct heat and electricity, and often has a shiny luster.

Front

What is the evidence of a chemical change?

Back

Unexpected color change, gas produced, temperature change, and formation of a precipitate.

Front

Which process is NOT evidence of a chemical change?

Back

Melting.

Front

What is a precipitate?

Back

A solid that forms when two liquids combine in a chemical reaction.

Front

List the three main groups of elements from greatest conductivity to least conductivity.

Back

Metals, metalloids, nonmetals.

Front

What are metals?

Back

Elements that are typically shiny, good conductors of heat and electricity, and malleable.

Front

What are nonmetals?

Back

Elements that are usually dull, poor conductors of heat and electricity, and brittle when solid.

Front

What is conductivity?

Back

The ability of a material to conduct heat or electricity.