1. Which of the following is an example of matter?
A. leaves<---<
B. shadows
C. light from the sun
D. sound
2. which of the following is an example of a chemical property of matter?
A. ability to melt
B. ability to freeze
C. ability to react<---<
D. ability to break
3. The physical property that makes metal pots good for cooking is ______________.
A. flexibility
B. electrical conductivity
C. flammability
D. heat conductivity<---<
4. A bucket of water and a cube of ice have different chemical properties.
A. true
B. false<---<
I agree with your answers. But please check your reading assignment and check back here in a couple of hour to make sure that a science tutor doesn't correct me.
To get the answer to question 1, you need to identify which option is an example of matter. Matter refers to anything that has mass and takes up space. So, you can eliminate options B and C since shadows and light from the sun are not physical objects with mass. Option D, sound, is not a physical object either but rather a wave of energy. Therefore, the correct answer is A, leaves, as they are physical objects with mass and occupy space.
For question 2, you're looking for an example of a chemical property of matter. Chemical properties describe how a substance interacts or reacts with other substances. Among the given options, the only one related to chemical reactions is C, the ability to react. Melting, freezing, and breaking are physical properties rather than chemical properties, so they can be eliminated. Thus, the correct answer is C, the ability to react.
To answer question 3, you need to identify the physical property that makes metal pots good for cooking. Among the given options, flexibility, electrical conductivity, and flammability can be eliminated. Flexibility and flammability have no direct correlation to cooking ability, and while electrical conductivity is a property of metals, it is not the primary reason why metal pots are suitable for cooking. The correct answer is D, heat conductivity. Metal is an excellent conductor of heat, allowing pots made from it to distribute heat evenly and facilitate efficient cooking.
Finally, for question 4, you are asked to determine whether a bucket of water and a cube of ice have different chemical properties. The statement is false. Both water and ice are simply different states of the same substance, H2O. While they may exhibit differences in physical properties (such as temperature and density), their chemical compositions remain the same. Therefore, the correct answer is B, false.