Atoms, ions and compounds 2.1-2.2

Question 1

What symbol is the number of protons denoted with?

Answer 1

Z

Question 2

What symbol is the mass number denoted with?

Answer 2

A

Question 3

What is similar and different of isotopes of the same element?

Answer 3

Isotopes of the same element have the same chemical reactions
Number of neutrons has no effect on reactions of an element
Same number of electrons
May have small differences in physical properties

Question 4

What is the name of a positive and negative ion?

Answer 4

Positive: Cation
Negative: Anion

Question 5

Which sub-atomic particle is slightly larger?

Answer 5

Neutron

Question 6

Where does the energy released from fusion come from? What does this mean therefore?

Answer 6

Mass is lost as energy (products slightly less mass)
Because atoms lose mass when the nucleus fuses together, you cannot add the number of protons and neutrons to get an accurate relative mass

Question 7

What is the standard isotope which bases all atomic masses?

Answer 7

Carbon-12