Topics

Question 1

Biochemist

Answer 1

Studies the processes that take place in living organisms

Question 2

Organic Chemistry

Answer 2

(Living matter… mostly)

Studies matter that’s carbon based

Question 3

Inorganic Chemistry

Answer 3

(Non living matter)

Studies matter that is not carbon based

Question 4

Physical chemistry

Answer 4

Deals with the mechanical, rate, energy transfer that occurs when matter undergoes a change

Question 5

Analytical chemistry

Answer 5

Focuses on the composition of matter

Question 6

Order the families on the Periodic Table

know where they are

Answer 6

Alkali Metals, Alkaline Earth metals, Transition, Other Metals, Metalloids, Other Non-Metals, Halogens, Noble Gases, Metals

Question 7

Calculate aam of nitrogen using this sample:

Isotope N-14 N-15

% abundance 98.6 1.40

Answer 7

Aam = (14) (0.986) + (15) (0.0140)

=14.014

Question 8

Aam

Answer 8

Average atomic mass

Is the mass recorded on a periodic table, based on a particular sample.

Isotopes are measured and recorded as a percent of the entire sample.

Question 9

Calculate number of neutrons

A) N-15
B) Ca-45
C) sulphur-35
D) iodine-131

Answer 9

1) 8
2) 25
3) 19
4) 78

Number of neutrons = atomic mass - atomic number

Question 10

Atomic Mass

Answer 10

The mass of an atom of the element and is expressed in AMU’s

Atomic mass = atomic number + number of neutrons

Can differ of number of neutrons changes

Question 11

Isotopes

Answer 11

Atoms of the same element that have different numbers of neutrons, different masses

Same element, different version

Question 12

Isotope Notation

Answer 12

1) Carbon-12, Carbon-14
(Element name, atomic mass)

2) C-12, C-14 (element symbol, atomic mass)

Question 13

How do you know the atomic number?

Answer 13

Number above the symbol (never changes)

Number of protons (and electrons) in nucleus of one atom of one element