G7 Science - Class 15 Review | Baamboozle - Baamboozle

English 18 Public

G7 Science - Class 15 Review

Study Slideshow

What is the Particle Theory of Matter?

See teacher

25

What is the name of the transition from Solid to Gas?

Sublimation

5

Categorize the following as a mechanical mixture, solution, or pure substance. a) Pizza b) Ketchup c) Copper

a) Mixture b) Solution c) Pure substance

15

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

25

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

25

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

20

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.

15

Identify three energy transformations found in this picture.

Electrical to Light Electrical to Mechanical Electrical to Sound

15

Describe one way to prevent conduction, radiation, and convection in homes.

Prevent conduction – use insulators Prevent convection – use weather stripping Prevent radiation – install shiny surfaces in the attic

15

Identify conduction, convection, and radiation in this photo.

Conduction – the park bench is getting hotter through the particles increasing kinetic energy and warming up Convection – the breeze Radiation – the sunlight

15

Name two types of renewable energy sources and two types of non-renewable energy sources.

Renewable - wind, hydro, solar, geothermal, biofuel Nonrenewable - fossil fuels, nuclear, natural gas

10

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.

15

Name four effects of climate change.

Increased wildfires Increased flooding Decreased ice and glaciers Drought Sea levels rising

10

Draw ten particles in a balloon that are at room temperature and ten particles in a balloon that are at 60°C.

See teacher

20

Explain how a nuclear reactor works to produce electricity.

Refined uranium undergoes nuclear fission which produces heat to turn water to steam. Steam turns turbines and produces electricity.

10

What is the name of the transition from Liquid to Solid?

Freezing

5