Atomic Structure

Question 1

What is an atom made of?

Answer 1

Neutron, proton, electron

Question 2

what is charge of a proton?

Answer 2

positive charge (+)

Question 3

what is the charge of a neutron?

Answer 3

no charge (0/neutral charge)

Question 4

what is charge of an electron?

Answer 4

negative charge (-)

Question 5

what do number of protons equal?

Answer 5

number of electrons

Question 6

why is the overall charge of an atom neutral?

Answer 6

because the electrons and protons’ charge cancel each other out

Question 7

what happens when an atom loses an electron?

Answer 7

it becomes a positive ion (+1)

Question 8

what happens when an atom gains an electron?

Answer 8

it becomes a negative ion (-1)

Question 9

what is the number above the letter called and what does it show?

Answer 9

The mass number. shows protons + neutrons

Question 10

what is number below the letter called and what does it show?

Answer 10

Atomic number. shows protons

Question 11

What would the overall charge be of a sodium atom that has lost 2 electrons and had originally had:
- 22 neutrons
- 11 electrons
- 11protons

Answer 11

+2 (-9 +11 = +2)

Question 12

what is the maximum electrons in the first shell?

Answer 12

2

Question 13

what is the maximum number of electrons in the second, third, fourth, fifth, etc, shells?

Answer 13

8

Question 14

what is an element?

Answer 14

substances made from only one type of atom

Question 15

what is a compound?

Answer 15

formed when 2 or more substances are chemically bonded

Question 16

what is a mixture?

Answer 16

formed from substances that have no chemical bond. easily separated by physical methods

Question 17

what is filtration used to separate?

Answer 17

used to separate insoluble solid from a liquid (solvent)

Question 18

what is distillation used to separate?

Answer 18

used to separate liquids with different boiling points from a liquid and insoluble solid from a liquid

Question 19

what does the number of the group mean?

Answer 19

number of electrons in the outer shell

Question 20

what happens as you go down the groups?

Answer 20

the number of shells increases, meaning the element gets bigger

Question 21

what is a group?

Answer 21

vertical column in periodic table

Question 22

what is a period?

Answer 22

horizontal row in periodic table