Davis Science Part 3 Question Preview (ID: 34608)


Changes Chemical Physical. TEACHERS: click here for quick copy question ID numbers.

Which is a chemical change?
a) frying an egg
b) boiling water
c) breaking a glass cup
d) crushing a piece of bread

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) multiplying the weights of each ingredient together
c) dividing the weight of the wet ingredients from the weight of the dry ingredients.
d) subtracting the weight of the wet ingredients from the weight of the dry ingredients.

Which steps in the water cycle most directly cause floods?
a) precipitation and runoff
b) condensation and evaporation
c) runoff and condensation
d) evaporation and precipitation

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) evaporation
b) transpiration
c) condensation
d) precipitation

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) dissolving different amounts of salt into water
c) boiling the same amount of different liquids
d) burning different types of paper

Water evaporates mostly from
a) land
b) snow
c) clouds
d) oceans

If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
a) 2 grams
b) 5 grams
c) 10 grams
d) 15 grams

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) transpiration
c) evaporation
d) condensation

Which abiotic factor most influences the water cycle?
a) air
b) sun
c) soil
d) wind

What is the difference between chemical and physical changes?
a) physical changes make a new substance, chemical is just a different form of same substance
b) chemical changes make a new substance, physical is just a different form of the same substance
c) chemical change is ice melting.
d) physical change is rust forming

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