Chemistry Flashcards
1
Q
Thermometer
A
- used to measure the temperature
2
Q
Beaker
A
- A glass container to hold large amounts of liquid
3
Q
Bunsen Burner
A
- used to heat materials in the lab
4
Q
Erlenmeyer Flask
A
- holds liquids, when stirring liquids won’t easily spill out
5
Q
Flint Striker
A
- used to ignite the Bunsen burners
6
Q
Graduated Cylinder
A
- accurately measures amounts of liquid
7
Q
Motor and Pestle
A
- used to grind up solids into a powder
8
Q
Medicine Dropper
A
- used to transfer a small amount of liquid
9
Q
Rubber Stopper
A
- used to plug the top of test tubes or Erlenmeyer Flasks when transporting
10
Q
Retort Stand
A
- used to hold objects over a Bunsen burner
11
Q
Safety goggles
A
- must be worn during every lab to prevent eye damage
12
Q
Scoopula
A
- used to scoop out small samples of powder
13
Q
Test tubes
A
- A glass container to hold small amounts of liquid
14
Q
Test tube brush
A
- used for cleaning on glassware, including test tubes
15
Q
Test tube rack
A
- used to hold multiple test tubes for an experiment
16
Q
Tongs
A
- used for holding/carrying hot beakers
17
Q
Utility clamp
A
- May be attached to a retort stand and be made to hold a test tube or thermometer
18
Q
HHPS
A
Household hazardous products symbols
19
Q
WHMIS
A
Workplace hazardous material information symbols
20
Q
Precipitate
A
A substance produced when solutions mix
21
Q
Name all 4 HHPS symbols
A
- DANGER: poisonous
- Danger: explosive
- Danger: corrosive
- Danger: flammable
22
Q
What does the diamond shaped symbol mean?
A
Warning
23
Q
What does the triangle shaped symbol mean?
A
Caution
24
Q
HHPS symbols are ___________ shaped
A
Octagonal
25
WHMIS symbols are ______ shaped
Circle
26
Symbol with broken test tube and the liquid inside spraying on hands
Corrosive material
27
Symbol with flame
Flammable and combustible material
28
Symbol with test tube looking object
Compressed gas
29
Symbol with "R" and test tube in the middle with liquid spraying up
Dangerously reactive material
30
Symbol with skull
Poisonous and infectious material causing immediate and toxic effects
31
Symbol with flame and circle underneath
Oxidizing material
32
Symbol with "T" exclamation mark
Poisonous and infectious material causing other toxic effects
33
Symbol with three circles all touching at the centre, not fully connected draw circles on the outside
Bio hazardous infectious material
34
6 steps to the scientific method
1. Ask a question
2. Do background research
3. Constrict a hypothesis
4. Test your hypothesis by designing and performing an experiment
5. Analyze your data and conclusion
6. Communicate your results
35
When people use words to describe the qualities of objects and events, the observations are ______________
Qualitative
36
When observations include a number and unit, they are said to be __________
Quantitive
37
Viscosity (P or C)
The resistance of a substance to being easily poured (physical)
38
Lustre (P or C)
The ability of a substance to reflect light (Chemical)
39
Hardness (P or C)
The resistance of a substance to scratching or penetration (Physical)
40
Malleability (P or C)
The ability of a substance to be moulded or flattened out into a sheet (Chemical)
41
Solubility (P or C)
The ability of a substance to dissolve into a solvent (Physical)
42
Ductility (P or C)
The ability of a substance to be stretched out into a wire-like shape (Chemical)
43
Transparency (P or C)
The ability of a substance to transmit light (Chemical)
44
Brittleness (P or C)
The ability of a substance to break easily into pieces (Chemical)
45
Density (P or C)
A measure of how much mass is contained in a given unit volume of a substance (Physical)
46
Independent variable
What you change in the experiment (plot on the x-axis)
47
Dependent variable
What your measure in the experiment (plot on the y-axis)
48
Controlled variable
Must be kept the same for all task groups during experiment
49
The particle theory
1. Matter is made up of tiny particles: atoms and molecules
2. Particles are always moving
3. Particles of matter are held together by attractive forces
4. There are spaces between particles
5. Each substance has unique particles that are different from the particles of other substances
50
Evidence of a chemical change
A change of color, a change an odour, bubbles are visible, new solid is seen, or a change in temperature or energy
51
Chemical property
When a substance becomes another substance through the process of shape change
52
Physical change
The composition of the substance remains exactly the same. Now new substances are made.
53
Pure substances
- Pure type of particle
| - have characteristics of physical and chemical change
54
Element
- 1 type of atom only
- found on periodic table
- pure
55
Molecules
- two or more atoms on a fixed ratio
- electrons shared
- pure
56
Ionic compounds
- two or more atoms in a fixed ratio
- attraction between ions
- pure
57
Impure substances
-mixture
58
Homogeneous
- 1 phase
59
Heterogeneous
- 2 or more phases
60
Solution
- mixture at the molecular level
- transparent is gaseous or liquid
- homogeneous
- impure
61
Suspension
- Small particles
- may or may not settle out
- opaque or translucent
- heterogeneous
- impure
62
Mechanical mixture
- large particles can be identified by the naked eye
- can be easily separated by mechanical means
- heterogeneous
- impure
