Which of the following tools would give the most precise measurement of 15 milliliters of water?

Which of the following do water (H2O), rust (Fe2O3), and salt (NaCl) have in common?

A cold can of juice is removed from the refrigerator and is placed outdoors on a warm day. After several minutes, moisture appears on the outside of the cold can. Which of the following statements best explains why the moisture appears?

Which of the following is produced when two or more elements combine in a chemical reaction?

Which of the following units best represents the density of an object?

Which of the following is an example of a container that is filled with a pure substance rather than with a mixture?

A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following physical properties of the sample is most helpful to determine if the liquid is water?

Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second t

Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following?

The surface of a heated metal object measures 120 ºC. It is dropped into a bucket filled with water measuring 10

A pot of cold water was heated on a stove until the water boiled. Which of the following best explains why the water was able to boil?

Which of the following is an example of a physical change but not a chemical change?

Which of the following is an example of the formation of a mixture?

Lauren adds 50 mL of boiling water to 100 mL of ice water. If the 150 mL of water is then put into a freezer, at what temperature will the water freeze?

Which of the following substances can be separated into several elements?

Which of the following is a characteristic of all chemical changes?

What is the smallest unit of an element that still has the properties of that element?

A can of regular soda sank to the bottom of a container of water, but the can of diet soda floated. Which of the following statements best explains this observation?

A student in a laboratory transfers a beaker containing a hot solution from the lab table to a cool water bath. Which of the following parts of the system experiences an increase in heat energy?

Sulfur (S), oxygen (O2), water (H2O), and 15 sodium chloride (NaCl) are all examples of pure substances. Which of the following describes all pure substances?

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