Science flashcards

WHMIS

Workplace Hazardous Materials Information System

WHMIS importance

WHMIS keeps people safe by explaining the hazards of products and how to use them safely.

WHMIS symbols

Bomb = explode
Flame = fire
Flame + circle = makes fire worse
Cylinder = gas
Corrosion = burns
Skull = poison
! = irritation
Person = long-term health
Tree/fish = environment

Biohazardous infectious materials — Infectious
Contains organisms that can cause disease

HHPS

Hazardous Household Product Symbols

HHPS importance

Warns people about the dangers of household products.

HHPS symbols

E-F-P-C

Lab safety

Goggles → protect your eyes

Tie back hair → prevents hair from getting in the way or catching fire

Closed-toe shoes → protect your feet

No eating/drinking → prevents chemicals from entering your body

Never taste chemicals

Don’t smell chemicals directly

Report spills/breakages/injuries to the teacher

Follow instructions

Lab equipment

Beaker → holds/mixes liquids

Graduated cylinder → measures liquid volume

Erlenmeyer flask → holds/mixes liquids

Test tube → holds small amounts of substances

Test tube rack → holds test tubes

Balance → measures mass

Thermometer → measures temperature

Bunsen burner → provides heat

Tongs → holds hot equipment

Funnel → helps pour liquids

Dropper/pipette → transfers small amounts of liquid

Microscope → makes tiny objects look larger

Scientific method

Independent Variable:
What you change in the experiment.
→ “I change it.”

Dependent Variable:
What you measure or observe.
→ “Data I measure.”

Controls / Controlled Variables:
Things you keep the same to make the experiment fair.
→ “Keep it the same.”

Hypothesis:
A testable prediction about what you think will happen.
→ “What I think will happen.”

Metric conversions

K H D U D C M

Metric conversion rule

Moving RIGHT = ×10 for each step

Moving LEFT = ÷10 for each step

Scientific notation

Scientific notation is a way to write very large or very small numbers more easily.

Scientific notation format

a x10^ (exponent)