1. elements
an element with properties of both metals and nonmetals
2. metal
substances with only one type of atom
3. metalloid
an element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction
4. nonmetal
an element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction

1. Elements

Substances with only one type of atom.

2. Metal

An element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction.

3. Metalloid

An element with properties of both metals and nonmetals.

4. Nonmetal

An element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.