Unit 1 Flashcards
Independent variable
The cause
Hypothesis
An educated guess about the relationship between the independent and dependent variable
Dependent variable
The effect
Controlled variable
Is something that always stays the same
HHPS
Hazardous household product symbol
WHMIS
Workplace hazardous material information system
Mass
The amount of particles in an object
Weight
The force of gravity acting on an object
Volume
The amount of space occupied by an object
Quantitative
Observations based on measurements or counting
Solubility
How much of a substance can be dissolved in a solvent
Observation
A description of an object or event using your senses
Ductility
The ability of a substance to be stretched out into a wire-like shape
Malleability
The ability of a substance to be moulded or flattened into a sheet
Viscosity
The thickness
State of matter
A solid liquid or gas
Translucent
Half see through
Transparent
See through
Opaque
Non see-through
Colourless
Has no colour
Crystalline
Containing the nature of crystals
Form (give an example)
A way of describing every object ex: crystal , powder
Inference
An educated guess of what an observation means
Clarity
The ability of a substance to transmit light
Lustre
The ability of a substance to reflect light
Qualitative
Describes measurable characteristics of a substance
Line graph (give an example)
Both dependent and independent variables are quantitative example: distance vs time
Bar graph (give an example)
One is qualitative and the other is quantitative example: amount of precipitation per month
Pie graph (give an example)
One is qualitative and the other one is quantitative and changed to a percentage ex: percentage of students vs favorite type of music
Corrosive
A substance capable of exploding or destroying itself
Biohazard
A virus or toxic hazard to humans
Meniscus
A curved substance
What are the steps in a scientific method ?
- Clearly states a goal or objective
- Provide an overview or list of materials needed
- Address any safety procedures that need to be followed
- Include all the steps for the procedure
- Use diagrams for clarification is needed
- The instructions that are completely in step-by-step fashion
What are all the six criteria of science?
- Consistent
- Observable
- Natural
- Predictable
- Testable
- Tentative
Give a testable question
Does this type of soil make the plant grow faster?
Which one is the independent variable: If the amount of sunlight the plant gets increases, then the growth increases
The amount of sunlight
Give a proper hypothesis for an experiment
Is the height that the rubber ball is dropped from increases, the height that it bounces up increases
What does a rubber stopper do?
It plugs the mouth of the flasks so contents don’t spill or evaporate
Graduated cylinder
Accurately measures amounts of liquids
Bunsen Burner
Produces a flame to heat chemicals
Beaker tongs
Safely transport a hot beaker from place to place
Retort stand
Clamps will attach to it to hold objects in the air
Test tube holder
Used to carry a hot test tube
Test tube rack
Holds test tubes
Mortar and pestle
Used to crash solids into smaller pieces or powder
Ring clamp
Attaches to support stand to hold objects
Beaker
Holds Liquids for experiments
Scopula
Used to scoop chemicals out of jars
Erlenmeyer flask
Holds liquids, if shaken Liquids won’t easily spill out
Wire gauze
Placed on a ring clamp so a ring clamp can be placed on top
Test tube
Can hold small amounts of solids or liquids for experimentation
List the names of the 10 safety rules
- Better safe then sorry 2. Safety glasses 3. Horse play out 4. Clean up all messes 5. Bunsen burner safety 6. Smelling chemicals 7. Heating substances 8. No eating in the classroom 9. Eliminate clutter 10. In case of an emergency
What’s the difference between HHPS and WHMIS
HHPS is stuff you would find at home and WHMIS is stuff you would find at a workplace
