Quiz On 3/10/16:

Question 1

Atomic Number

Answer 1

Number of protons in an atom.

Question 2

Electrons

Answer 2

Negatively charged atomic particle outside the nucleus of an atom.

Question 3

Isotopes

Answer 3

Atom of an element that differs in number of neutrons from other atoms of the element.

Question 4

Metalloids

Answer 4

Class of elements that have some properties of metals and some properties of nonmetals.

Question 5

Metal

Answer 5

Class of elements that are good conductors of electricity.

Question 6

Neutron

Answer 6

Electrically neutral atomic particle inside the nucleus of an atom.

Question 7

Non-Metal

Answer 7

Class of elements that do not conduct electricity.

Question 8

Protons

Answer 8

Positively charged atomic particle inside the nucleus of an atom.

Question 9

Valence Electron

Answer 9

Electron in the outer energy level of an atom that is potentially involved in chemical reactions.

Question 10

Malleability

Answer 10

Ability of metal to be hammered into thin sheets.

Question 11

Ductile

Answer 11

Ability for metal to be drawn out into a thin wire.

Question 12

Atomic Mass

Answer 12

SI unit for the mass of an atom.

Question 13

How do you find the number of protons on the periodic table?

Answer 13

Same number as the atomic number (bottom left)

Question 14

How do you find the number of electrons on the periodic table?

Answer 14

Same number as the atomic number (bottom left)

Question 15

How do you find the number of neutrons?

Answer 15

Atomic mass (bottom of the element) minus the atomic number (top of the element)

Question 16

How do you find the valence electrons on the periodic table?

Answer 16

It is the number on top of each row.

Question 17

Where is the atomic number?

Answer 17

The top of the element symbol.

Question 18

Where is the atomic mass?

Answer 18

Below the element symbol.

Question 19

How are metals, metalloids, and nonmetals different?

Answer 19

Metals = Conduct electricity very easily.
Nonmetals = Poor Conductors
Metalloids = Okay conductors, it varies.

Question 20

Why is the arrangement of the periodic table helpful?

Answer 20

Helps us to see patterns.
What sort of elements they are.
What group they belong too.
The elements state of matter.

Question 21

Why is the atomic mass a decimal?

Answer 21

Because this number is average of all the isotopes in the element, it is also an average of all the particles in an element.