MASS AND VOLUME
Mindy found two seashells when she went to the beach. They appear to be almost the same size, but they have different shapes. How could she figure out if their volume is the same?
A. weigh each one on a scale to see which is heaviest
B. take the temperature of each one to see which has the most heat
C. measure the length of each one with a measuring tape to see which is longest
D. drop each one in a beaker of water to see which raises the water level to the highest level
D. drop each one in a beaker of water to see which raises the water level to the highest level
Chemical or Physical Change?
Tearing up Paper
Physical
Isaac has a bucket of saltwater. Which of the following would be the best way to remove the water so that Isaac is left with only salt?
A. Stir the saltwater for a long time. The salt will form a crystal.
B. Leave the saltwater to sit for a long time. The salt will settle to the bottom.
C. Boil the saltwater. The water will evaporate and only the salt will remain.
D. Freeze the saltwater. The water will sink to the bottom and the salt will rise to the top
C. Boil the saltwater. The water will evaporate and only the salt will remain.
Which of the following solids will not dissolve in boiling water?
A. sand
B. sugar
C. table salt
D. baking soda
A. sand
Vance found an object outside. He picked up the object and made these observations:
1. no color (clear)
2. has a mass of 3.5 grams
3. it has a square shape that does not change
4. has a volume of 4 mL
He knows the object is a solid, but most of his observations could apply to a solid, liquid, or a
gas. Which of his observations only apply to a solid?
A. 1
B. 2
C. 3
D. 4
C. 3
Diego pours 50 mL of water into a graduated cylinder. Then, he carefully places a glass marble into the graduated cylinder making sure no water splashes out. He measures how high the water level rises. Diego repeats this process using a metal nail. Which property of the marble and the nail is Diego most likely comparing?
A. temperature
B. volume
C. shape
D. mass
B. volume
Which of the following best describes an example of a material undergoing a chemical change to become another material with different characteristics?
A. Water turns into a gas vapor when it boils.
B. Iron turns to rust when it is exposed to oxygen.
C. Oxygen can become liquid at a very low temperature.
D. Gold can be spread out very thin to cover a large area
B. Iron turns to rust when it is exposed to oxygen.
Ebert's science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings?
A. Use a magnet to pull the iron filings from the salt.
B. Add food coloring to the mixture to make the salt change color.
C. Pour them into a beaker of water and see if the iron filings float.
D. Heat up the mixture to see if the salt or the iron filings will burn away.
A. Use a magnet to pull the iron filings from the salt.
Carl is cooking with his father. The recipe tells them to add butter, oil, salt, and noodles to a pot of boiling water and stir. Which of the four ingredients will dissolve in the water?
A. oil
B. salt
C. butter
D. noodles
B. salt
10. Devon is exploring physical and chemical changes in her house. Which of the following best describes a physical change affected by temperature?
A. Bread turns to toast when it is heated.
B. Dough turns to cookies when it is heated.
C. Batter turns to pancakes when it is heated.
D. Liquid water turns to steam when it is heated.
D. Liquid water turns to steam when it is heated.
Vance found an object outside. He picked up the object and made these observations:
1. no color (clear)
2. has a mass of 3.5 grams
3. it has a square shape that does not change
4. has a volume of 4 mL
He knows the object is a solid, but most of his observations could apply to a solid, liquid, or a
gas. Which of his observations only apply to a solid?
A. 1
B. 2
C. 3
D. 4
C. 3
Which of the following actions best describes a chemical change caused by a change in temperature?
A. freezing water to make ice
B. dissolving sugar in warm water
C. mixing nuts and seeds in a cold bowl
D. cooking a raw egg in a pot of boiling water
D. cooking a raw egg in a pot of boiling water
Ms. Shepherd's class is learning about separating mixtures. Which of the following mixtures would Ms. Shepherd's students most likely use a strainer or sieve to separate?
A. salt and sugar
B. pebbles and sand
C. dimes and pennies
D. baking soda and flour
B. pebbles and sand
A student is mixing a powdered drink mix with water. Which is the best way to make the powder dissolve faster?
A. do not stir it for as long
B. decrease the amount of water
C. add more powdered drink mix
D. increase the temperature of the water
D. increase the temperature of the water
Chemical of Physical Change?
Baking a cake
Chemical
Which of the following instruments would be needed to determine the volume of liquid in a small jar?
A. A meter stick
B. A graduated cylinder
C. A larger jar
D. A scale
C. A larger jar
Rebecca leaves a basket of flowers she has just picked outside in the hot sun for several hours. What will Rebecca most likely find in her basket when she returns?
A. The flowers will be wilted and possibly brown.
B. The flowers will be moving up towards the sunlight.
C. Because they are living, the flowers will not have changed.
D. Because they were just picked, the flowers will not have changed
A. The flowers will be wilted and possibly brown.
A student wants to remove salt from a mixture of sand and salt. He adds water to the mixture. Which of the following best explains why he
would add water to begin separating the mixture?
A. Salt dissolves in water.
B. Sand dissolves in water.
C. The water freezes to salt.
D. The salt floats on the top of water
A. Salt dissolves in water.
Carly has a thick ten-kilogram block of soap and a thin ten-kilogram sheet of the same kind of soap. Which answer best explains which will dissolve first when they are both placed underwater?
A. The sheet will dissolve first because it has more surface area.
B. The sheet will dissolve first because it has less mass than the block.
C. The block and the sheet will dissolve at the same pace because they weight the same.
D. The block and the sheet will dissolve at the same pace because they take up the same space.
A. The sheet will dissolve first because it has more surface area.
Carlos has a mixture of iron filings, foam pellets, sand, and sugar. After separating the iron filings and foam pellets from the mixture, what would Carlos most likely need to do to separate the rest of the mixture?
A. Filter the sand, evaporate the water, and then dissolve the sugar.
B. Filter the sand, dissolve the sugar, and then evaporate the water.
C. Dissolve the sugar, filter the sand, and then evaporate the water.
D. Dissolve the sugar, evaporate the water, and then filter the sand
C. Dissolve the sugar, filter the sand, and then evaporate the water.