F321-The Atom

Question 0

Where are electrons found?

Answer 0

In the shells of an atom

Question 1

What does the nucleus of an atom contain?

Answer 1

Protons and neutrons

Question 2

What is the relative charge and relative mass of a proton?

Answer 2

R Charge = 1+

R Mass = 1

Question 3

What is the relative charge and relative mass of a neutron?

Answer 3

R charge = 0

R mass = 1

Question 4

What is the relative charge and relative mass of an electron?

Answer 4

R charge = 1-

R mass = 1/2000 (negligible)

Question 5

Define isotopes

Answer 5

Atoms of the same element with a different number of neutrons

Question 6

What does the top number of an element represent?

Answer 6

Relative atomic mass (number of protons and neutrons)

Question 7

What does the bottom number of an element represent?

Answer 7

Atomic number (number of protons/electrons)

Question 8

Mass number

Answer 8

The number of protons and neutrons in the nucleus of an atom

Question 9

Atomic number

Answer 9

The number of protons in the nucleus of an atom

Question 10

What are the 3 isotopes of Hydrogen?

Answer 10

Protium, Deuterium, Tritium

Question 11

Define relative isotopic mass

Answer 11

The mass of an atom of an isotope compared with 1/12th of the mass of an atom of C-12

Question 12

Define relative atomic mass

Answer 12

The weighted mean mass of an atom of an element compared with 1/12th of the mass of an atom of C-12

Question 13

How do you calculate the relative atomic mass of an element?

Answer 13

Multiply together each percentage abundance by the isotope number individually. Then add them all together and divide by 100.

Question 14

Do you add or subtract the number of a positive charge off/on to the electrons

Answer 14

Subtract

Question 15

Do you add or subtract the number of a negative charge off/on to the electrons

Answer 15

Add