Structure of An Atom & The Periodic Table of the Elements

Question 1

How many protons does hydrogen have?

Accepted Answer

1

Question 2

How many neutrons does Aluminum have?

Accepted Answer

14

Question 3

The three states of matter are ____, ___, _____.

Accepted Answer

solids, liquids, and gases.

Question 4

Electrons have ________.

Accepted Answer

a negative charge (-)

Question 5

An atom is mostly _________.

Accepted Answer

empty space

Question 6

_________ and _____ make up most of the mass of the atom.

Accepted Answer

Protons and neutrons

Question 7

Phosphorus is in Group 15 so it has ___ valence electrons.

Accepted Answer

5

Question 8

How many electrons does phosphorus have?

Accepted Answer

15

Question 9

How many protons does Aluminum have?

Accepted Answer

13

Question 10

How many protons does cobalt have?

Accepted Answer

27

Question 11

Potassium is in Group 1 so it has ____ valence electron

Accepted Answer

1

Question 12

How many electrons does hydrogen have?

Accepted Answer

1

Question 13

How many neutrons are in Argon?

Accepted Answer

22

Question 14

The rounded atomic mass is _________.

Accepted Answer

59

Question 15

How many electrons does potassium have?

Accepted Answer

19

Question 16

How many protons are in Argon?

Accepted Answer

18

Question 17

Protons have ______

Accepted Answer

a positive (+) charge.

Question 18

Neutrons have a ____.

Accepted Answer

neutral (zero) charge).

Question 19

Twelve (12) is the element's ________.

Accepted Answer

atomic number

Question 20

Ca is the element's _________

Accepted Answer

Chemical symbol

Question 21

Anything that has mass or takes up space is _____.

Accepted Answer

matter

Question 22

_______ organizes all of the elements.

Accepted Answer

The Periodic Table of the Elements

Question 23

Hydrogen is in Group 1 so it has ___ valence electron.

Accepted Answer

1

Question 24

The 3 parts of an atom are ____, ____, _____.

Accepted Answer

protons, neutrons, and electrons

Question 25

How many neutrons does hydrogen have?

Accepted Answer

0

Question 26

How many neutrons does phosphorus have?

Accepted Answer

16

Question 27

How many neutrons does cobalt have?

Accepted Answer

32

Question 28

Matter is made of ________.

Accepted Answer

atoms

Question 29

Electrons are ________.

Accepted Answer

outside the nucleus.

Question 30

How many electrons does cobalt have?

Accepted Answer

27

Question 31

How many protons does phosphorus have?

Accepted Answer

15

Question 32

How many neutrons does potassium have?

Accepted Answer

20

Question 33

How many electrons does Aluminum have?

Accepted Answer

13

Question 34

A pure substance made of only 1 kind of atom is an ______.

Accepted Answer

element

Question 35

Aluminum is in Group 13 so it has ____ valence electrons

Accepted Answer

3

Question 36

Protons and neutrons are _______.

Accepted Answer

inside the nucleus.

Question 37

How many electrons are in Argon?

Accepted Answer

18

Question 38

How many protons are in potassium?

Accepted Answer

19

Question 39

Argon is in Group 18 so it has ____ valence electrons.

Accepted Answer

8

Structure of An Atom & The Periodic Table of the Elements

Questions 39

Structure of An Atom & The Periodic Table of the Elements

Questions 39