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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?

Afrying an egg Bbreaking a glass cup Cboiling water Dcrushing a piece of bread

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

Asubtracting the weight of the wet ingredients from the weight of the dry ingredients. Bdividing the weight of the wet ingredients from the weight of the dry ingredients. Cmultiplying the weights of each ingredient together Dadding the weights of each ingredient together

3) Which steps in the water cycle most directly cause floods?

Acondensation and evaporation Bevaporation and precipitation Cprecipitation and runoff Drunoff 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?

Aprecipitation Bcondensation Ctranspiration Devaporation

5) Nick and Allison are conducting experiments in science class. In which experiment will the students most likely observe a new material being formed?

Amelting ice in containers at different temperatures Bdissolving different amounts of salt into water Cboiling the same amount of different liquids Dburning different types of paper

6) Water evaporates mostly from

Asnow Bclouds Coceans Dland

7) If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

A15 grams B10 grams C2 grams D5 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?

Aprecipitation Btranspiration Ccondensation Devaporation

9) Which abiotic factor most influences the water cycle?

Asoil Bwind Csun Dair

10) What is the difference between chemical and physical changes?

Aphysical change is rust forming Bchemical change is ice melting. Cphysical changes make a new substance, chemical is just a different form of same substance Dchemical changes make a new substance, physical is just a different form of the same substance

*select an answer for all questions

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