WorksheetsMs Ps1 5
Total questions: 22
Worksheet time: 6hrs 30mins
The pictures show butter and water in solid states. The melting point of each substance is shown.
Students put solid butter and solid water on a table. The air temperature around the table is 20 degrees Celsius.
Which statement describes the most likely state of each substance after two hours?
A. The butter and water will both become liquids.
B. The butter will remain a solid, and the water will become a liquid.
C. The butter and water will both remain solids.
D. The butter will become a liquid, and the water will remain a solid.
Substances have different freezing and boiling points. These values help scientists know when phase changes happen.
Which three substances will have a phase change if the temperature goes up from 50 degrees Celsius to 300 degrees Celsius?
phosphorus
potassium
sodium
gallium
rubidium
The diagram shows water particles in three different phases.
On a summer day, water particles from the ocean change phase as they move into the air. Which of the following models best shows this process?
At which two temperatures is water MOST likely to be in vapor form and a solid form?
70 degrees Celsius
120 degrees Celsius
-10 degrees Celsius
90 degrees Celsius
20 degrees Celsius
Which picture BEST shows what change occurs when heat is added to ice?
Veronica weighed an empty bowl and recorded its mass. Then she placed three ice cubes in the bowl and weighed it again. After the ice melted, she recorded the mass of the bowl and the water. She put the data in a table.
What conclusion should Veronica make from her observations?
A. The masses of the water and the ice were both 43 grams, so the amount of matter did not change.
B. The masses of the water and the ice were both 153 grams, so the amount of matter did not change.
C. Some of the water spilled because the mass of liquid water should have been greater than the mass of solid ice.
D. There was an error in weighing the ice because the mass of liquid water should have been less than the mass of solid ice.
A glass of ice water is placed on a table inside a room that is at room temperature. The ice inside the glass melts. The diagram represents the changes observed.
Which piece of evidence supports the conservation of matter during the changes shown in the diagram?
A. The contents of the glass are wet before and after the ice melts.
B. The combined mass of the glass and its contents is the same before and after the ice melts.
C. The combined mass of the glass and its contents is less after the ice melts.
D. The contents of the glass are colorless before and after the ice melts.
Chris fit the pieces of a space shuttle model together.
Which statement BEST describes how the pieces compare to the completed model?
A. Each piece is stronger than the completed model.
B. The mass of the completed model equals the mass of all the pieces.
C. Each piece is made from a different material than the completed model.
D. The mass of the completed model is more than the mass of all the pieces.
Cherise mixed 30 grams of sugar into 100 grams of water. The sugar dissolved. Cherise recorded the data in the table below.
Based on the data in the table, find the mass of the sugar solution.
A. 100 grams
B. 108 grams
C. 130 grams
D. 200 grams
Malik weighed an empty beaker. The beaker weighed 50 grams. Then Malik added 115 grams of water to the beaker. He placed the beaker of water in a freezer until the water became solid ice. Which prediction should Malik make about the ice in the beaker?
The ice will weigh less than 115 grams. After the ice melts, the water will weigh less than 115 grams.
The ice will weigh less than 115 grams. After the ice melts, the water will weigh 115 grams.
The ice will weigh 115 grams. After the ice melts, the water will weigh less than 115 grams.
The ice will weigh 115 grams. After the ice melts, the water will weigh 115 grams.
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.
Andrew designs an investigation to test how temperature affects the formation of a solution. He mixes the same amounts of sugar to water at different temperatures. Andrew creates the chart shown to record the results.
Andrew will know that a solution has formed when what happens to the liquids?
A. when the liquids give off an odor
B. when the sugar in the liquids dissolves
C. when the masses of the liquids are reduced
D. when a solid substance appears in the liquids
A student performs an experiment. The students wants to study the fastest way to dissolve sugar in tea. The student uses 50 milliliters of tea and adds 50 grams of sugar cubes for each trial. The student waits two minutes before making the observations shown in the table.
How can the experiment be changed to be sure that as much sugar as possible has dissolved?
A. Use larger sugar cubes in the 40 degree Celsius tea.
B. Stir the tea constantly at all three temperatures.
C. Use less water at all three temperatures.
D. Use a larger cup to hold the 50 degree Celsius tea.
Look at the data in the picture.
What conclusion is BEST supported by the data?
A. Sugar dissolves best at 22 degrees Celsius.
B. Sugar dissolves best at 60 degrees Celsius.
C. Sugar dissolves fastest between 22 degrees Celsius and 45 degrees Celsius.
D. Sugar dissolves fastest between 45 degrees Celsius and 60 degrees Celsius.
A student plans an investigation to see how water temperature affects the way sugar dissolves. The student will perform two trials with the setup shown.
How should the student improve the investigation to get better results?
A. use the same mass of sugar in each trial
B. use the same water temperature in each trial
C. use different volumes of water in each trial
D. use different containers in each trial
Students build a model rocket. The rocket uses a dissolving antacid tablet for power. The students want to know if the size of the pieces of an antacid tablet affects the distance that the rocket flies.
Students pour 20 milliliters of tap water into the rocket. Then they add half an antacid tablet to the water and close the rocket. They launch the rocket and measure the distance it flies. The diagram shows the materials used.
A. Repeat the same process three times to improve the precision.
B. Do one trial using half an antacid tablet broken into a few pieces and one trial using a powdered half of an antacid tablet.
C. Do several trials, adding half an antacid tablet to different amounts of water.
D. Use a full antacid table for the trial instead of half an antacid tablet.
Mrs. Garza's class mixed some materials. They mad a table of the materials and the products after the materials combined.
Based on the table, which materials mixed to form a new substance?
A. water and flour
B. water and salt
C. iodine and flour
D. iodine and salt
A cup of sand is mixed into a bucket of rocks. Another cup of sand is mixed into a bucket of water. Which statement BEST compared the two buckets?
A. Only the bucket with rocks is a solution because the materials must be chemically divided from the rocks.
B. Both buckets are solutions because the materials must be separated by chemical means.
C. Both buckets are mixtures because the materials can be separated by physical means.
D. Only the bucket with water is a mixture because the sane can be dissolved by the water.
A student poured vinegar into a bowl with baking soda.
When the vinegar and baking soda combine, bubbles appear because
A. a mixture forms
B. a new gas forms
C. the vinegar is a liquid
D. the baking soda dissolves
A type of cold pack has two separate sections inside. One section contains a liquid and the other section contains a powder. When the cold pack is squeezed, the section that holds the liquid breaks. When the liquid combines with the powder, the pack becomes very cold.
Which is the BEST explanation why the temperature of the pack decreases when the liquid and powder combine?
A. A mixture forms.
B. A solution forms.
C. A chemical change occurs.
D. Thermal energy is used.
A student poured five different clear, colorless liquids into five different beakers. Each beaker was half-filled with the liquid. The student added 1 gram of a white powder and stirred each mixture. The student's observations are recorded in the data table.
In which two mixtures was a new substance formed?
Mixture 1
Mixture 2
Mixture 3
Mixture 4
Mixture 5
Students completed four investigations where they combined two different substances.
Which investigation shows evidence that the chemical properties of the substances changed?
A. Vegetable oil coats the surface of lettuce when oil and lettuce are combined.
B. Salt dissolves in water when salt and water are combined.
C. Sand sinks in water when water and sand are combined.
D. Bubbles form when baking soda and vinegar are combined.
