Ch.7 Les 3 Classifying Elements

Question 1

Neutron

Answer 1

Particles in an atom that have a neutral charge

Question 2

Electron

Answer 2

A particle in the space outside the nucleus of an atom that carries one unit of negative elective charge

Question 3

Atomic number

Answer 3

The number of protons in a single atom of an element

Question 4

Molecule

Answer 4

A particle that contains two or more atoms joined together

Question 5

Metal

Answer 5

A substance that conducts heat and electricity

Question 6

Nonmetal

Answer 6

A group of elements that are poor conductors of heat and electricity

Question 7

Nobel gases

Answer 7

The nonmetallic elements such as helium, neon, argon, krypton, xenon, and radon

Question 8

Metalloids

Answer 8

A small group of elements with some properties of both metals and radon

Question 9

Periodic table

Answer 9

A chart that shows all of the known elements and their properties

Question 10

Proton

Answer 10

A particle in the space inside the nucleus of an atom that carries one unit of positive electic charge