Science Ch 7 Lesson 3

Question 1

Neutron

Answer 1

Particles in an atom that have neutral charge

Question 2

Electron

Answer 2

A particle in the space outside the nucleus of a atom that carries one unit of negative electric charge

Question 3

Atomic number

Answer 3

The number of protons in a single atom of element

Question 4

Molecule

Answer 4

A particle that contains two or more atoms joined together

Question 5

Metal

Answer 5

A substance that contains heat and electricity

Question 6

Nonmetal

Answer 6

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

Question 7

Noble 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 nonmetals

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 space inside the nucleus of an atom that carries one unit of positive electric charge