Chemistry

Question 1

Definition of qualitative

Answer 1

Describes the “quality” of a substance using your senses

Question 2

The part of a lab where you summarize your findings

Answer 2

Conclusion

Question 3

The part of the lab where you record your data

Answer 3

Observations

Question 4

The part of the lab where you make an educated guess about what will happen

Answer 4

Hypothesis

Question 5

The beginning of a lab

Answer 5

Purpose/question

Question 6

The list of items you will need to complete your lab

Answer 6

Materials

Question 7

A set of instruction you will need to follow to complete your lab

Answer 7

Procedure

Question 8

What does WHMIS stand for?

Answer 8

Workplace Hazardous Materials Information System

Question 9

What does HHPS stand for?

Answer 9

Hazardous Household product symbols

Question 10

Define Physical Property

Answer 10

Observing a substance using your 5 senses and measuring instruments

Question 11

Define Chemical Property

Answer 11

Characteristics of a material that you can see when a substance is reacted

Question 12

Define Physical Change

Answer 12

A change in which no new substance is made

Question 13

Define Chemical Change

Answer 13

A reaction that makes a new substance

Question 14

What are the 5 evidences of chemical change?

Answer 14

1.Change in color
2. Bubbling
3. light/heat
4. Precipitation
5. Odor

Question 15

Define Colour

Answer 15

What it looks like

Question 16

Define Odour

Answer 16

How it smells

Question 17

Texture

Answer 17

How it feels

Question 18

Lustre

Answer 18

Ability to reflect light

Question 19

Viscosity

Answer 19

Ability to flow

Question 20

Hardness

Answer 20

Ability to be scratched

Question 21

Clarity

Answer 21

The ability to allow light through it
Transparent - clear/see through
Translucent - foggy
Opaque - can’t see through it

Question 22

Malleability

Answer 22

Can be bent or hammered into shapes

Question 23

Ductility

Answer 23

Can be pulled into wires

Question 24

Corrosive

Answer 24

Causes damage by a chemical reaction

Question 25

Flammable

Answer 25

Can burn or ignite easily

Question 26

Reactive

Answer 26

Change easily or vigorously when in contact with other substance

Question 27

The Billiard Ball model - envisioned the atom as a tiny indestructible sphere

Answer 27

Dalton

Question 28

Planetary Model- Electrons move in fixed shells or orbitals around the nucleus

Answer 28

Bohr

Question 29

Raisin Bun Model - negative particles rest in a positively charge ‘dough’

Answer 29

Thompson

Question 30

Four basic elements were believed to be essential for life

Answer 30

Ancient Greeks

Question 31

Quantum Mechanical model - Orbitals are regions of different shapes, based on the wave nature of electrons

Answer 31

Schrodinger

Question 32

He proposed that paramanu (the atom) is an indestructible particle of matter

Answer 32

Indian sage - Acharya Kanad

Question 33

Nuclear Model - the nucleus holds the positive charges and is very small, the negative electrons circle the outside

Answer 33

Rutherford

Question 34

How to calculate for neutrons

Answer 34

Atomic Mass (Round to ones) - Atomic Number = Neutrons

Question 35

Ionic Bonding:

Answer 35

electrons are lost from one atom and gained by another

Question 36

Covalent Bonding:

Answer 36

electrons are shared

Question 37

What is an inference?

Answer 37

a conclusion reached on the basis of evidence and reasoning.