Chap 1 - Scientific Endeavour Flashcards
What is Science?
Science is being curious about the world.
Where can we observe Science?
Science can be found in our everyday lives.
Where can scientific experiments be carried out?
In the lab or in nature.
What is qualitative data?
Data that is observed using our 5 senses. Qualitative data is usually described with descriptive words such as heavy, fast, long.
What is quantitative data?
Data that involves units and measurements.
What impact does advancements in technology have on Science?
More scientific evidence can be found which results in more knowledge and new beliefs.
What do scientists do before conducting experiments?
Pose questions using the 5Ws and make a hypothesis.
What is a hypothesis?
An idea or explanation that you then test through study and experimentation.
What are examples of scientific instruments and their purpose
Measuring cylinder - Measures volume
Digital stopwatch - Measures time
Digital calliper - Measures length
Electronic balance - Measures mass
What is a numerical value and what is a unit?
Numerical value–>5.00 s–>units
What are the SI units
Volume - m3
Time - s
Length - m
Temperature - K
Mass - kg
What are some apparatus and their function
Boiling tube - Contains chemicals
Test tube - Holds chemicals
Conical flask - Mixes chemicals
Evaporating dish - Evaporate liquids
Retort stands - Holds other apparatus with clamps
What is the difference between accuracy and precision?
Accuracy is how close the measurement is to the true value
Precision is how consistent each measurement is
What is zero error
When the instrument shows a non zero number when the quality of the number should be 0
What is parallax error
When the measurement is viewed at the wrong angle
What are consistent errors
Errors that are consistently inaccurate
What are unpredictable errors
Errors that are random
What are the nine hazard symbols in the lab
Corrosion - Corrosive
Skulls and crossbones - Acute Toxicity
Flame over circle - Oxidising substance
Flame - Flammable
Exploding bomb - Explosive
Gas cylinder - Gasses under pressure
Environment - Environmental Toxicity
Exclamation mark - Harmful or Irritant
Health Hazard - Aspiration Hazard
Name some safety apparatus in the lab
Eyewash apparatus
Sand bucket
Emergency shower
Fire blanket
Fire extinguisher
First aid kit
Name parts of the Bunsen Burner
Barrel
Airhole
Collar
Base
Gas tube
What is a luminous flame
-Orange flame on the top, blue on the bottom
-Unsteady flame
What is a non luminous flame
-Blue flame
-Steady flame
-Used for cooking and heating
