L1 - Fundamental Particles

Question 1

What is the relative mass of a proton?

Answer 1

1

Question 2

What is the relative mass of a neutron?

Answer 2

1

Question 3

What is the relative mass of an electron?

Answer 3

1/1836

Question 4

What is the relative charge of a proton?

Answer 4

+1

Question 5

What is the relative charge of a neutron?

Answer 5

0

Question 6

What is the relative charge of an electron?

Answer 6

-1

Question 7

Which number is the mass number and which is the atomic number?

Answer 7

mass - the bigger number

atomic - the smaller number

Question 8

What is the mass number?

Answer 8

the number of protons + neutrons

Question 9

What is the atomic number?

Answer 9

the number of protons in the nucleus of an atom

Question 10

How do you know the number of electrons?

Answer 10

it’s the same as the number of protons neutral (check atomic number)

Question 11

How do you calculate the number of neutrons?

Answer 11

mass number - atomic number

Question 12

What are ions?

Answer 12

Atoms of the same element with the same number of protons and neutrons but a different number of electrons

More electrons means a negative charge and less electrons means a positive charge

Question 13

What are isotopes?

Answer 13

Atoms of the same element with the same number of protons but a different number of neutrons

Isotopes have the same chemical properties, but can have different physical properties (such as density)