Science Term 3 Chemistry Flashcards
Recall the names of some common lab equipment. (17)
Beaker
Conical Flask
Gauze Mat
Tripod
Bunsen Burner
Heatproof Mat
Filter Funnel
Graduated Measuring Cylinder
Watch Glass
Evaporating Disk
Test Tube
Test Tube Rack
Beaker Tongs
Spatula
Stirring Rod
Retort Stand with boss head clamp
Thermometer
What is the function of a beaker?
Measuring, transferring, mixing, heating and holding liquids.
What is the function of a conical flask?
Measuring, transferring, mixing, heating and holding liquids.
What is the function of a gauze mat?
Placed on top of a tripod underneath a Bunsen burner. Supports a container (like beaker or conical flask) while being heated. Helps to distribute heat evenly.
What is the function of a tripod?
To be placed over a Bunsen burner, supporting beaker/conical flask is placed on top, over the gauze mat.
What is the function of a Bunsen burner?
To heat substances, using a controlled and steady amount of heat.
What is the function of a Heatproof Mat?
To be put underneath a heat source (like a Bunsen burner) so you don’t damage the surface underneath.
What is the function of a Filter Funnel?
It’s used to separate solids from liquids. Also used for putting/pouring liquids into a container or piece of equipment with a fine opening.
What is the function of a Graduated Measuring Cylinder?
This is used to measure the volume of liquids very accurately.
What is the function of a Watch Glass?
Used as a lid on top of beakers, holding and weighing small amounts of substances
What is the function of an Evaporating Disk?
Used when evaporating liquids.
What is the function of a Test Tube?
Used to hold, mix and heat small amounts of substances.
What is the function of a Test Tube Rack?
Used to hold upright and stable, store and transport test tubes.
What is the function of Beaker Tongs?
Used to handle hot beakers.
What is the function of a Spatula?
Used to scrape, transfer, mix small amounts of substances.
What is the function of a Stirring Rod?
Agitates or used for stirring substances.
What is the function of a Retort Stand with boss head clamp?
Used to support other pieces of science lab equipment and glassware.
What is the function of a Thermometer?
Measuring the temperature of different substances.
Define observation
A statement made based on something someone has seen, heard, or noticed
Define inference.
A conclusion made on the basis of evidence and reasoning
What is the difference between observation and inference?
Observations are facts and objective, while inferences are educated assumptions based off observations.
What are the metric units used for measuring mass?
Volume is represented by (V) and is usually measured in millilitres, represented by mL. Eg. V = 12 mL
What are the metric units used for measuring length?
Length is represented by l and is usually measured in meters, represented by m.
Eg. L = 10 m
What are the metric units used for measuring time?
Mass is represented by m and is usually measured in kilograms, represented by kg.
Eg. m = 10 kg
What are the metric units used for measuring temperature?
Temperature is represented by ____ and is usually measured in Kelvin, represented by K. Eg. Temperature = 10 k
What are the metric units used for measuring time?
Time is represented by ____ And is usually measured in seconds, which is represented by s. Eg. Time = 10 s
How do you convert between the metric units?
(Km - m x 1000) (m - cm x 100) (cm - mm x 10)
(mm - cm / 10) (cm - m / 100) (m - Km / 1000)
What do all particles have in common?
They all experience and have attractive forces.
What are the 3 states of matter?
Solid, liquid, gas
Explain the position and motion of a solid
The arrangement of the particles is as it seems on the outside. (regular) And the particles movement is vibrating in a fixed spot.
Explain the position and motion of a liquid
The arrangement of the particles is random. And the particles move freely but remain close to each other.
Explain the position and motion of a gas
The arrangement of the particles is random. And the particles move freely, far apart at a high speed.
How do you convert between the metric units?
(Km - m x 1000) (m - cm x 100) (cm - mm x 10)
(mm - cm / 10) (cm - m / 100) (m - Km / 1000)
What are the relationships between temperature and motion of the particles?
Heat the particles = Gain energy and speed up their motion
Cool the particles = Lose energy and motion slows down
What is the behaviour and properties of a solid particle?
Incompressible
Fixed volume
Fixed shape
Solids are ridged
Cannot flow
What is the behaviour and properties of a liquid particle?
Incompressible
Fixed volume
Changeable shape
Can flow