1. Which of the following is NOT an example of a characteristic property used to identify matter?
- A. Melting point
- B. Color
- C. Volume
- D. Density
2. A geologist finds a yellow mineral. To determine if it is gold, she compares several of its properties to the known properties of gold. This process works because...
- A. all yellow minerals are types of gold.
- B. gold has a unique set of characteristic properties.
- C. the size of the mineral is its most important property.
- D. properties like color are enough for a final identification.
3. Which statement best defines a characteristic property of a substance?
- A. A trait that can only be observed during a chemical reaction.
- B. A physical feature, like its mass or volume, that is easy to measure.
- C. A unique trait that remains constant regardless of the amount or size of the substance.
- D. A property that changes depending on the temperature and pressure of the environment.
4. A scientist has two metal cubes of different sizes. If both cubes are made of pure copper, which property must be the same for both?
- A. Mass
- B. Volume
- C. Density
- D. Weight
5. A student is given an unknown liquid and asked to identify it. Which of the following procedures would be most useful in determining the liquid's identity?
- A. Pouring the liquid into a larger beaker to see if its color changes.
- B. Measuring the total volume of the liquid in a graduated cylinder.
- C. Measuring its mass and volume to calculate its density and comparing it to known values.
- D. Observing the shape the liquid takes when poured onto a flat surface.
6. A student measures a small piece of silver and finds it has a mass of 21.0 grams and a volume of 2.0 cm³. If the student were to measure a larger piece of pure silver, what would be true?
- A. Its density would be greater than 10.5 g/cm³.
- B. Its density would be less than 10.5 g/cm³.
- C. Its density would be exactly 10.5 g/cm³.
- D. Its density would depend on its shape.
7. Which of the following is an example of an extrinsic property of matter?
- A. Density
- B. Boiling point
- C. Volume
- D. Color
8. Imagine you are given a large, solid cube of sugar. If you crush the cube into a fine powder, what happens to the density of the sugar substance?
- A. The density increases because the particles are smaller.
- B. The density decreases because there is now air between the grains.
- C. The density of the actual sugar material remains unchanged.
- D. The density becomes zero.
9. A scientist has two solid blocks of pure, polished aluminum. Block A is much larger and heavier than Block B. Which property will be identical for both blocks?
- A. Mass
- B. Volume
- C. Weight
- D. Density
10. Why is density considered a 'fingerprint' for a pure substance?
- A. Because it is the easiest property to measure in a lab.
- B. Because it changes depending on the shape of the substance.
- C. Because it is a constant value for that substance, regardless of the sample's size or shape.
- D. Because all substances with the same color will have the same density.