Identifying elements by subatomic particles

Question 1

"X" is an unknown element. What is the actual name of Element X?

Accepted Answer

Lithium

Question 2

What is the ion symbol for this element?

Accepted Answer

Not enough info to decide

Question 3

What did Ernest Rutherford conclude from the gold foil experiment?

Accepted Answer

All of the above

Question 4

An element has 6 protons, 7 neutrons, and 6 electrons. What is the charge on this element?

Accepted Answer

Neutral

Question 5

I have 2 protons, 2 neutrons, and no electrons. Who am I?

Accepted Answer

Helium

Question 6

An element has 10 protons, 11 neutrons, and 10 electrons. What is the mass number?

Accepted Answer

21

Question 7

An element has 3 protons, 3 neutrons, and 2 electrons. What is the ion symbol?

Accepted Answer

Li+1

Question 8

What was John Dalton's claim to fame?

Accepted Answer

He developed the atomic theory

Question 9

How many neutrons does this isotope have?

Accepted Answer

34

Question 10

What is the mass number of Lithium-7?

Accepted Answer

7

Question 11

I have 20 protons, 20 neutrons, and 18 electrons. Who am I?

Accepted Answer

Calcium

Question 12

I have 20 protons, 20 neutrons, and 18 electrons. What is my charge?

Accepted Answer

+2

Question 13

How many protons does this isotope have?

Accepted Answer

29

Question 14

An element has 6 protons, 7 neutrons, and 6 electrons. What is this element?

Accepted Answer

Carbon

Question 15

Which particles would you expect to find in the nucleus?

Accepted Answer

protons and neutrons

Question 16

How many neutrons would you expect there to be in Hydrogen-2? (This is tricky!)

Accepted Answer

1

Question 17

Neutrons are located in the nucleus

Accepted Answer

True

Question 18

Which of these is NOT stated in the atomic theory?

Accepted Answer

Some atoms have extra neutrons

Question 19

How many protons are there in Phosphorus-31? (THINK!)

Accepted Answer

15

Question 20

How many neutrons does this element have?

Accepted Answer

42

Question 21

"X" is an unknown element. How many neutrons does Element X have?

Accepted Answer

4

Question 22

What is the difference between these forms of hydrogen?

Accepted Answer

They all have different masses

Question 23

Why are protons important?

Accepted Answer

They help identify the element

Question 24

"X" is an unknown element. Figure out the actual name of "X"

Accepted Answer

Carbon

Question 25

What was J.J. Thompson's claim to fame?

Accepted Answer

He discovered the electron

Question 26

Mass number refers to...

Accepted Answer

the total number of particles in the nucleus

Question 27

What is the difference between these three types of carbon?

Accepted Answer

They all have different numbers of neutrons

Question 28

"X" is an unknown element. How many neutrons does Element X have?

Accepted Answer

Carbon

Question 29

How many neutrons would you expect Uranium-238 to have?

Accepted Answer

146

Question 30

An element has 20 protons 20 neutrons, and 18 electrons. What is the ion symbol?

Accepted Answer

Ca+2

Question 31

How would you describe the matter in this picture?

Accepted Answer

A mixture of two compounds

Identifying elements by subatomic particles

Questions 31

Identifying elements by subatomic particles

Questions 31