Module 1

Question 1

Physical chemists

Answer 1

understand chemical systems from a theoretical framework

Question 1

What is chemistry?

Answer 1

The study of matter and the changes it undergoes

Question 2

analytical chemists

Answer 2

study methods for identification and quantification of matter within chemical systems

Question 3

inorganic chemists

Answer 3

study substances that are derived from all elements except carbon

Question 4

organic chemists

Answer 4

study carbon based compounds

Question 5

biochemists

Answer 5

study chemical processes that occur within living systems

Question 6

what is matter

Answer 6

anything that has mass and occupies space

Question 7

atoms

Answer 7

subatomic particles that are the fundamental building blocks of all matter

Question 7

protons

Answer 7

positively charged particle with mass

Question 7

neutrons

Answer 7

electrically neutral with mass equal to proton

Question 8

electrons

Answer 8

negatively charged particle with little mass

Question 9

molecules

Answer 9

2 or more atoms joined together

Question 10

Pure substance that cannot be separated into simpler substances

Answer 10

element

Question 11

pure substance composed of 2 or more elements in proportions, can be separated via chemical method

Answer 11

compound

Question 12

uniform mixture

Answer 12

homogenous

Question 13

not a uniform mixture

Answer 13

heterogenous

Question 14

solid to liquid

Answer 14

melting

Question 15

liquid to solid

Answer 15

freezing

Question 16

liquid to gas

Answer 16

vaporizing

Question 17

gas to liquid

Answer 17

condensation

Question 18

gas to solid

Answer 18

deposition

Question 19

solid to gas

Answer 19

sublimation

Question 20

physical properties

Answer 20

odor, taste, color, appearance, melting point, boiling point

Question 21

chemical properties

Answer 21

corrosiveness, flammability, acidity, toxicity

Question 22

Who developed the atomic theory

Answer 22

John dalton 1808

Question 23

What is the atomic theory

Answer 23

1) each element composed of atoms
2) atoms in an element have equal mass
3) atoms combine in whole number ratios
4) atoms cannot change from one atom to another

Question 24

Particles in the nucleus

Answer 24

protons and neutrons

Question 25

particle(s) outside the nucleus

Answer 25

electrons

Question 26

atomic number

Answer 26

number of protons

Question 27

mass number

Answer 27

sum of protons and neutrons

Question 28

atomic mass (Amu)

Answer 28

average mass of element

Question 29

molar mass (g/mol)

Answer 29

mass divided by amount of substance

Question 30

core electrons

Answer 30

innermost electrons, lowest energy level

Question 31

valence electrons

Answer 31

outermost electrons, highest energy level (involved in bonding)

Question 32

How many electrons in the s, p, d, f orbitals

Answer 32

s=2, p=6, d=10, f= 14

Question 33

Increases as you move down and to the left of the periodic table

Answer 33

atomic size

Question 34

Decreases as you move down and to the left of the periodic table

Answer 34

ionization energy and electronegativity