1. Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed? C. 1,200 g of salt and 1,200 g of water

Transcription

1 1. Thomas has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed? A. 600 g of salt and 600 g of water B. 900 g of salt and 200 g of water C. 1,200 g of salt and 1,200 g of water A

2 2. An ice cube is placed in a glass of water. The total weight of the ice cube and water is 0.5 pounds. After the ice cube melts, what will most likely be the total weight of the water? A. 0.4 pounds B. 0.5 pounds C. 0.8 pounds D. 1.0 pound B

3 3. Water is boiled and water vapor forms. Which best describes this process? A. A chemical change occurs because a completely new substance forms. B. A chemical change occurs because the temperature of the water changes. C. A physical change occurs because the water disappears as it is absorbed by air. D. A physical change occurs because water and vapor are different states of the same substance. D

4 4. When water vapor rises and cools, the liquid water in the air comes together forming A. wind. B. clouds. C. lightning. D. tornadoes. B

5 5. Energy from the Sun changes a liquid to a gas by the process of: A. condensation. B. evaporation. C. freezing. D. melting. B

6 6. A swing set has a mass of 235 kilograms (kg). The chains connected to the seats have a combined mass of 35 kilograms (kg) and the frame has a mass of 190 kilograms (kg). What is the combined mass of the seats? A. 10 kilograms B. 15 kilograms C. 25 kilograms D. 30 kilograms A 35kg= chains 190 kg= frame Total= 225

7 7. Which is an example of condensation? A. water boiling in a pot B. water being absorbed by plants C. salt being removed from water D. moisture on mirror after hot shower D

8 8. Jasmine bought a 525-gram bag of unfrozen fruit popsicles. Which best describes the mass of the popsicles after they were completely frozen? A. 325 grams B. 425 grams C. 525 grams C

9 9. Puddles on a sidewalk are evaporating quickly. What most likely causes the puddles to evaporate? A. heat B. clouds C. air D. water A

10 10. Which parts of the water cycle change liquid into vapor? A. condensation and transpiration B. evaporation and condensation C. evaporation and transpiration D. transpiration and runoff C

11 11. Which process in the water cycle returns water to the atmosphere? A. condensation B. evaporation C. precipitation D. transpiration B

12 12. Which is not a process involved in the water cycle? A. condensation B. precipitation C. evaporation D. fixation D

13 13. Which of these could cause water vapor to condense into rain droplets? A. sunlight warming the surface of oceans B. air rising into colder regions of the atmosphere C. lightning heating the air in the atmosphere D. winds blowing along the surface of the ground B

14 14. Which best explains why runoff is important? A. It returns water to other locations on Earth. B. It increases the chance of flooding. C. It makes evaporation occur faster. D. It increases condensation. A

15 15. Katrina built a house weighing 1 pound out of toy blocks, but she accidentally knocked it down. What was the weight of all of the fallen blocks? A. 1/2 pound B. 2 pounds C. 1 pound C D. 0 pounds

16 16. A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the weight of the egg? A. 50 grams B. 55 grams C. 100 grams B D. 110 grams

17 17. A group of students mixed 10 ounces of liquid X with 12 ounces of liquid Y to create a new substance. The experiment was conducted in a closed soda bottle weighing 3 ounces. The students weighed the bottle with the new substance immediately following the experiment. Which best describes their results? A.It weighed 13 ounces because liquid Y dissolved in liquid X. B.It weighed 15 ounces because liquid X dissolved in liquid Y. C. It weighed 25 ounces because the weight of both liquids and the bottle remain the same and must be added together. D. It weighed 47 ounces because the weight of the liquids is doubled when they are mixed, and the weight of the bottle remains the same. C

18 18. 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 D

19 19. Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be? A grams B. 5.0 grams C grams C

20 20. A fresh apple is placed in a tightly sealed glass jar. The total mass of the jar and apple is measured. After a week, the apple in the jar begins to rot. The total mass is measured again. Which can be accurately predicted? A. The total mass will not change because the amount of matter in the jar and the apple will not change. B. The mass of the jar will be the total mass because no matter will be left in the jar after the apple rots. C. The total mass will increase because the rotting apple will produce gases. D. The total mass will decrease because the rotting apple will release heat. A

21 21. A group of students weighed a sealed jar full of heavy cream. Then they shook the jar until the cream separated, and then they weighed the jar again. Which of the following would best describe its weight? A. The jar will have gained weight because some liquid changed to a solid. B. The jar will have gained weight because shaking added energy to it. C. The jar will have lost weight because of friction from shaking the liquid. D. The jar will have kept the same weight because it did not gain or lose any matter. D

22 22. Alyssa bought 1 pound of apples for a pie. She peeled, cored, and sliced the apples. She then weighed the apple pieces and found them to now weigh less than 1 pound. If Alyssa weighs the apple pieces, cores, and peelings together what would they most likely weigh? A. The apple pieces, cores, and peelings would weigh 1 pound. B. The apple pieces, cores, and peelings would weigh 1/2 pound. C. The apple pieces, cores, and peelings would weigh 1 1/2 pounds. D. The apple pieces, cores, and peelings would weigh 2 pounds. A

23 23. A teacher adds 2 g of chalk to 25 g of vinegar in a tightly sealed jar. The chalk and vinegar react, and gas bubbles form. What is the total mass of the jar s contents after the reaction takes place? A. 23 g B. 25 g C. 27 g D. 50 g C

24 24. One type of cold remedy is an effervescent tablet that breaks down in water. When the tablet is placed in water, it forms gas bubbles. In this example, the formation of a gas: A. is a physical property. B. occurs when adding water to acid. C. is a sign of a chemical change. D. occurs when the water boils. C

25 25. Which best explains what happens to the inside of an egg when it is boiled? A. The liquid becomes solid. B. The solid becomes a gas. C. The solid becomes a liquid. D. The liquid becomes a gas. A

26 26. Which example shows a new substance being formed? A. a candle burning B. a shoelace being tied C. a pipe being cut in half D. a block of ice melting A

27 27. Ruth left a wax candle in her car for several hours on a warm day. Which describes the change in the candle Ruth most likely observed? A. The candle changed its shape. B. The mass of the candle wax increased. C. The mass of the candle wax decreased. D. The candle changed into a new substance. A

28 28. Which example best describes a physical change? A. iron rusting B. charcoal burning C. an ice cube melting D. a marshmallow burning C

29 29. Water is boiled and turns to vapor. The vapor is cooled and changes back into water. Which best describes what has occurred? A. a physical change, because the matter changed its state B. a chemical change, because the matter changed its state C. a physical change, because a new substance was formed D. a chemical change, because a new substance was formed A

30 30. Are the following changes to matter chemical or physical? 1.Mixing baking soda and vinegar 2. Cutting Paper 3. Freezing water 4. Rusted Metal Chemical= 1, 4 Physical= 2, 3

31 31. Which is a chemical change? A. frying an egg B. boiling water C. breaking a glass cup D. crushing a piece of bread A

32 32. Which best describes why deflating the air from a basketball is an example of a physical change? A. The basketball s shape is changed. B. The basketball s color is changed. C. The basketball s size is changed. A

33