Atoms

Question 1

What are the 3 fundamental particles of an atom?

Answer 1

Electrons, Protons, Neutrons

Question 2

What does Mass Number(A) and Atomic Number(Z) mean?

Answer 2

Mass Number(A)- Number of Protons and Neutrons in the nucleus of an atom

Atomic Number(Z)- Number of Protons in the nucleus of an atom

Question 3

Name the Relative Mass and Relative Charge of the following and where they’re found;
Electrons, Neutrons, Protons

Answer 3

Electron
RM: Negligible or 1/1836
RC: -1 WF: In Shells

Proton
RM: 1 RC: +1 WF: Nucleus

Neutron
RM: 1 RC: 0 WF: Nucleus

Question 4

Define, in terms of fundamental particles, the meaning of the term isotopes

Answer 4

An isotope of an elements has the same number of protons but different number of neutrons

Question 5

State and explain the difference in chemical reactivity of isotopes

Answer 5

There is none, as they have the same electron configuration therefore the same chemistry and reactions

Question 6

Define Relative Atomic Mass

Answer 6

Relative Atomic Mass-

Average/mean mass of all element atoms)/ (1/12 of the mass of a Carbon 12 atom

Question 7

Why is Carbon 12 used the RAM?

Answer 7

• so it’s easier to scale the rest of the elements’ masses

- it’s an easy element to calibrate machines with

Question 8

Name what is produced from the following reactions:

1) Acid + Alkali
2) Acid + Reactive Metal
3) Acid + Carbonate Compound

Answer 8

1) Salt + Water
2) Salt + Hydrogen
3) Salt + Water + Carbon Dioxide