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Davis Science Part 3
Test Description: Changes chemical physical
Instructions: Answer all questions to get your test result.
1) Which is a chemical change?
A
crushing a piece of bread
B
frying an egg
C
boiling water
D
breaking a glass cup
2) Julia is following a recipe to make batter for a cake. She uses a scale to weigh each ingredient separately. Julia can best use this information to predict the weight of the mixed batter by
A
adding the weights of each ingredient together
B
dividing the weight of the wet ingredients from the weight of the dry ingredients.
C
subtracting the weight of the wet ingredients from the weight of the dry ingredients.
D
multiplying the weights of each ingredient together
3) Which steps in the water cycle most directly cause floods?
A
evaporation and precipitation
B
condensation and evaporation
C
precipitation and runoff
D
runoff and condensation
4) A container is placed in front of a heat lamp. After a few hours, water droplets begin to form on the container. Which part of of the water cycle does this best demonstrate?
A
condensation
B
transpiration
C
evaporation
D
precipitation
5) Nick and Allison are conducting experiments in science class. In which experiment will the students most likely observe a new material being formed?
A
melting ice in containers at different temperatures
B
boiling the same amount of different liquids
C
dissolving different amounts of salt into water
D
burning different types of paper
6) Water evaporates mostly from
A
snow
B
clouds
C
land
D
oceans
7) If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
A
15 grams
B
10 grams
C
2 grams
D
5 grams
8) After a rain, a puddle of water remains on a sidewalk. After a day of sunshine, the puddle is gone. Which process is most responsible for the disappearance of the puddle?
A
precipitation
B
evaporation
C
condensation
D
transpiration
9) Which abiotic factor most influences the water cycle?
A
soil
B
wind
C
air
D
sun
10) What is the difference between chemical and physical changes?
A
chemical changes make a new substance, physical is just a different form of the same substance
B
physical changes make a new substance, chemical is just a different form of same substance
C
chemical change is ice melting.
D
physical change is rust forming
*select an answer for all questions
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