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25
×
What is the Particle Theory of Matter?
See teacher
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10
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Name four effects of climate change.
Increased wildfires Increased flooding Decreased ice and glaciers Drought Sea levels rising
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25
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How would you separate the following mixtures? a) Vegetable oil and sand b) Salt and pepper c) Blood
a) Oil will float and sand will settle b) Add water to dissolve the salt and filter out the pepper. Evaporate water from salt water. c) Centrifuge
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25
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What are the factors that affect dissolution. Explain each factor if we want to increase dissolution.
1) Temperature - higher temperature 2) Agitation - more agitation 3) Particle Size - smaller particles
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boom
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seesaw
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gift
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thief
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20
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a) What type of separation is this? b) If the solvent is water, which sample is more soluble in water, O or P?
a) Paper chromatography b) P is more soluble in water
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10
×
Name the three gases responsible for the greenhouse effect.
carbon dioxide, methane, nitrous oxides
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heart
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gift
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fairy
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25
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baam
Lose 20 points!
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lifesaver
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seesaw
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fairy
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thief
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15
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Categorize the following as a mechanical mixture, solution, or pure substance. a) Pizza b) Ketchup c) Copper
a) Mixture b) Solution c) Pure substance
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15
×
Which of the following solids is most soluble at 40°C? What is the area above the curve and below the curve called?
Solid B is most soluble at 40 degrees C. Area above is called supersaturated, area below the curve is called unsaturated.
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15
×
Explain how a heat pump works in the summer and in the winter. What is the ground temperature at around 5m below surface?
Heat pump circulates water from the outside ground to cool and warm the home. The ground temperature is around 8-10 degrees C at 5m below surface.
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15
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Describe one way to prevent conduction, radiation, and convection in homes.
Prevent conduction â use insulators Prevent convection â use weather stripping Prevent radiation â install shiny surfaces in the attic
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5
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What is the name of the transition from Solid to Gas?
Sublimation
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5
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What is the name of the transition from Liquid to Solid?
Freezing
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seesaw
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shark
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fairy
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lifesaver
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