Physical and Chemical Change EOG Review

Physical and Chemical Change EOG Review

By Kendal West

​A change where a new substance is created; a chemical reaction

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Ex. nail rusting, baking a cake, ​mixing baking soda & vinegar

Chemical Change

A change to the physical properties of ​a substance. (No new material forms)

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Ex. mowing the grass, ​a wall being painted, water changing to vapor

Physical Change

Physical vs. Chemical Change

Open Ended

Name another example of a physical change.

Open Ended

Name another example of a chemical change.

Multiple Choice

Students observed a piece of iron change from shiny to rusty. What caused this change?

• a chemical reaction

• a heat reaction

• a cold reaction

• a physical reaction

Multiple Choice

Which is the best example of a new substance forming?

• lighting a match

• cutting a piece of paper

• popping a balloon

• hitting a nail with a hammer

Multiple Choice

Which best explains why burning wood is a chemical change?

• the process occurs quickly

• the process can be reversed

• the process can be repeated

• the process creates a new substance

Multiple Choice

Which example best describes a physical change?

• baking a pie

• burning a candle

• making a paper airplane

the amount of gravitational pull on an object

Weight

the amount of matter that makes up an object​

​Mass

Mass vs. Weight

Multiple Choice

Two liquids are poured together, and a solid substance forms with no liquid remaining. Liquid 1 has a mass of 200 grams, and a liquid 2 has a mass of 100 grams. What would be the total mass of the solid substance formed?

• 100 grams

• 150 grams

• 250 grams

• 300 grams

Multiple Choice

A student flattens a ball of clay he is given and shapes it to resemble a boat. Which best describes the masses of the clay ball and the clay boat?

• the mass of the clay ball is more than the mass of the clay boat

• the mass of the clay boa is more than the mass of the clay ball

• the masses of the clay ball and the clay boat are the same

• the clay ball has mass, but the boat does not

Multiple Choice

Mrs. Lowery creates a piece of artwork by melting crayons and mixing the colors together. She uses 20 crayons that weighed 5 grams each. What is most likely the weight of her artwork?

• 4 grams

• 5 grams

• 20 grams

• 100 grams

Water Cycle

The sun is the driving force of the water cycle. ​

Evaporation - liquid water turning to water vapor

Transpiration - ​water being evaporated from plants

Condensation - ​water vapor condensing

Precipitation ​- liquid water falling in the form of rain, snow, sleet, hail

Some text here about the topic of discussion

Multiple Choice

When the sun warms water, which resulting process occurs?

• precipitation

• runoff

• evaporation

• condensation

Multiple Choice

One morning, a student notices that the grass in the area is wet, although it had not rained during the night. What could have caused the grass to be wet?

• During the night, water had evaporated from the trees in the area.

• The air above the ground became warmer during the night and caused precipitation.

• When the air cooled above the ground during the night, water vapor condensed on the grass.

• The grass soaked up water from the ground during the night.

Multiple Choice

How does energy from the sun influence the water cycle?

• by trapping water particles in clouds

• by turning liquid water into water vapor

• by causing water to precipitate

• by creating winds in the atmosphere

Multiple Choice

How do plants return water back into the environment?

• by evaporation

• by condensation

• by runoff

• by transpiration

Multiple Choice

Water droplets forming on the outside of a cold glass of water on a hot, summer day is an example of which part of the water cycle?

• condensation

• evaporation

• precipitation

• transpiration

Multiple Choice

After lake water flows through a dam, which processes are most responsible for helping replace the water in the lake?

• precipitation and runoff

• transpiration and condensation

• condensation and runoff

• transpiration and precipitation