atoms and periodic table (ST)

Question 1

What are atoms made of?

Answer 1

An atom is made up of
three subatomic particles; electrons, protons, and neutrons.

Question 2

What is found inside the nucleus?

Answer 2

Protons and neutrons

Question 3

Name 5 properties of metals

Answer 3

Good conductors of heat and
electricity

 Ductile and malleable
 Shiny

 Solid at room temperature (except
Mercury)

 React with acids

 Found to the left of the staircase

Question 4

Name 5 properties of Non-metals

Answer 4

 Poor conductors of heat and electricity

 Many are liquid at room temperature

 If solid, can be easily reduced into a
powder

 Located to the right of the staircase,
adding hydrogen.

Question 5

Name 3 properties of Metalloids

Answer 5

 Have properties of both metals and nonmetals

 Used to make semi-conductors

 Found alongside the staircase

Question 6

What column is Alkali
metals found in and name its properties.

Answer 6

 Found in column 1
It is also
 Soft and highly malleable
 Stored in oil because they react to moisture in the air
 Combine to form molecules

Question 7

What column is Alkali earth
metals and names its properties?

Answer 7

 Found in column 2
 Soft and reactive
 Can be exposed to air
 Combine to form compounds

Question 8

what column are Halogens found in and what are halogens commonly used for?

Answer 8

 Found in the second to last column

 Nonmetals
 Combine to form compounds
 Disinfectants

Question 9

what column is Noble gases found in.

Answer 9

 Found in the last column
 Unreactive
 Exist alone

Question 10

what column is Noble gases found in?

Answer 10

 Found in the last column
 Unreactive
 Exist alone

Question 11

What is the missing coefficient?

cu+ 02 = 2 CuO

Answer 11

2cu+02= CuO

Question 12

What does the number of shells represent in the Rutherford-Bohr models?

Answer 12

The number of shells an
atom has, is indicated by the period (row) it is in on the periodic table.

Question 13

What is represented in lewis notation

Answer 13

Lewis notation is a simplified representation of the atom, in which only
valence electrons are illustrated. Valence electrons are the electrons gravitating
around the nucleus of the atom in the last energy shell.

Question 14

where is the electron located?

Answer 14

It is located outside of the nucleus in the electron shells, the further it is from the nucleus the
less energy holds it to the nucleus. The electrons on the last energy shell of an
atom are therefore the ones that will be shared or moved when atoms combine to
form molecules or during stating electricity.

Question 15

What is a valence electron?

Answer 15

Electrons located on the outer shell, these electrons can be shared or transferred to fill out the last shell.