Science Sem 2 Feb 10 Grade 9
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What does qualitative observation mean?
Qualitative observation is interpretation-based.
What does quantitative observation mean?
Qualitative observation is based on measurements and counting.
What does correlation mean?
Correlation identifies a pattern between the independent variable and dependent variable. e.g: birthday parties cause aging.
What does causation mean?
Causation is the pattern between the independent variable and dependent variable because of the independent variable. e.g: skipping lunch causes hunger.
What does WHMIS mean?
Workplace Hazardous Materials Information System.
What does HHPS mean?
Hazardous Household Products Symbols.
What does the octagon mean?
Danger.
What does the square mean?
Warning.
What does the upside down triangle mean?
Caution.
What does the skull symbol mean?
Poisonous.
What does the fire symbol mean?
Flammable.
What does the spark symbol mean?
Explosive.
What does the hand symbol mean?
Corrosive.
What is the function of a erlenmeyer flask?
For measuring and pouring liquids. For heating/mixing substances. Shape avoids loss due to splashing.
What is the function of a dropper?
Used to transfer a SMALL amount of liquid.
What is the function of a test tube holder?
Used for holding individual test tubes.
What is the function of safety glasses?
To protect the eyes.
What is the function of a funnel?
Transfer of liquids from one vessel to a small opening.
What is the function of a beaker?
For measuring and pouring liquids. For heating/mixing substances.
What is the function of a scoopula?
For moving samples of solids. Not used for stirring.
What is the function of beaker tongs?
Lifting hot beakers.
What is the function of a test tube?
For heating or mixing a small amount of chemicals.
What is the function of a thermometer?
For measuring temperature.
What is the function of a wash bottle?
For rinising or adding water.