Atoms

Question 1

Which element has 6 neutrons and mass number 12?

Accepted Answer

carbon (C)

Question 2

Which is the lightest sub-atomic particle?

Accepted Answer

electron

Question 3

Which sub-atomic particles move around the nucleus?

Accepted Answer

electrons

Question 4

Who was the father of the periodic table, presenting his version in 1869?

Accepted Answer

Mendeleev

Question 5

What is a neutral atom that loses an electron called?

Accepted Answer

positive ion

Question 6

Which element here is inert / nonreactive (but potentially dangerous to a reporter at the Daily Planet)?

Accepted Answer

krypton

Question 7

The columns in the periodic table are called:

Accepted Answer

groups

Question 8

Which element has two protons and two neutrons?

Accepted Answer

helium

Question 9

How many electrons can be in the first shell (energy level)?

Accepted Answer

2

Question 10

Which letter is not in the Periodic table?

Accepted Answer

J

Question 11

Where does the word atom come from?

Accepted Answer

Greece

Question 12

Which sub-atomic particle is positive?

Accepted Answer

proton

Question 13

Which sub-atomic particles are in the nucleus?

Accepted Answer

protons and neutrons

Question 14

Which of these atoms is the heaviest?

Accepted Answer

oxygen

Question 15

Which type of radiation emits a particle that is the same as the helium nucleus?

Accepted Answer

Alpha

Question 16

What is the mass number − atomic number?

Accepted Answer

the number of neutrons

Question 17

Which element has atomic number 8?

Accepted Answer

oxygen

Question 18

Atoms bonded together are called:

Accepted Answer

a molecule

Question 19

Two isotopes of an element have the same number of: (clue: same atomic number but different mass number)

Accepted Answer

protons

Question 20

In heavy water, how many neutrons are in the hydrogen atom? (just a bit heavier than normal)

Accepted Answer

1

Questions 20