elements

Question 1

A (N)________ is a material that cannot be broken down into anything simpler by chemical reactions.

Answer 1

Element

Question 2

______ are elements that share common properties such as shiny luster, conductivity, and flexibility.

Answer 2

Metals

Question 3

A (N) ______ is the smallest unit of an element that retains the properties of that element.

Answer 3

atoms

Question 4

The ______ is the center of an atom.

Answer 4

nucleus

Question 5

The ______ is a particle with one unit of positive electric charge.

Answer 5

proton

Question 6

The ______ is a particle with NO ELECTRIC charge,it is neutral.

Answer 6

neutron

Question 7

atoms also contain ______ which are smaller particles with one unit of negative electric charge each.

Answer 7

electrons

Question 8

_____ are particles with more than one atom joined together.

Answer 8

Molecules

Question 9

what does amu mean

Answer 9

Atomic Mass Unit

Question 10

who made the periodic table

Answer 10

Dmitri Mendeleev