3. A hypothesis is a testable statement.- T

4. Weight is a measure of the quantity of matter.- F

6. Potential energy is energy of motion.- F?

7. Liquids do not have a definite shape or volume.- F

8. The ability to burn is a chemical property.- T

10. Solutions are heterogeneous mixtures.- F?

11. An element cannot be broken down into simpler substances by ordinary chemical means.- F

16. Density is the mass of a substance per unit of volume.- T?

20. The amount of heat needed to raise the temperature of one gram of a substance 1degree C is specific heat.- T?

Thanks!
-MC

11. Think

20. Actually, lawyer wise, it is false.
specific heat content is the amount of heat required to raise a specific mass a specific increase in temperature. That being said, its units can be

J/gC or kJ/kg-C or kJ/mole-C

But in your text, I bet it is true, joules per gram-C

So 11 is T?

Thanks!
-MC

3. A hypothesis is a testable statement. - True

To determine the validity of a hypothesis, it must be testable. This means that it can be verified or falsified through experimentation or observation. The process of testing a hypothesis involves designing and conducting experiments to collect data that will either support or refute the statement.

4. Weight is a measure of the quantity of matter. - False

Weight is actually a measure of the gravitational force acting on an object. It is dependent on both the mass of the object and the acceleration due to gravity. Mass, on the other hand, is a measure of the quantity of matter present in an object and is independent of gravity.

6. Potential energy is energy of motion. - False

Potential energy is actually energy that is stored and has the potential to be converted into another form of energy. This could include gravitational potential energy, elastic potential energy, chemical potential energy, etc. Kinetic energy, on the other hand, is the energy possessed by an object due to its motion.

7. Liquids do not have a definite shape or volume. - False

Liquids have a definite volume but do not have a definite shape. They can take the shape of their container but maintain their volume regardless of the shape. This is different from gases, which do not have a definite shape or volume.

8. The ability to burn is a chemical property. - True

The ability to burn is indeed a chemical property. It refers to a substance's ability to undergo combustion, which involves a chemical reaction with oxygen resulting in the release of heat, light, and often other products. Chemical properties describe how a substance interacts with other substances to produce new substances.

10. Solutions are heterogeneous mixtures. - False

Solutions are actually homogeneous mixtures, which means they have a uniform composition and cannot be visibly distinguished. In a solution, the solute (substance being dissolved) is dispersed uniformly throughout the solvent (substance doing the dissolving). This is in contrast to heterogeneous mixtures, which have visible differences in composition.

11. An element cannot be broken down into simpler substances by ordinary chemical means. - False

Elements are the simplest forms of matter and cannot be broken down into simpler substances by ordinary chemical means. However, they can be broken down into smaller particles called atoms through nuclear reactions or high-energy processes.

16. Density is the mass of a substance per unit of volume. - True

Density is defined as the mass of a substance divided by its volume. It represents the amount of matter (mass) present in a given amount of space (volume). The equation for density is density = mass/volume.

20. The amount of heat needed to raise the temperature of one gram of a substance 1 degree Celsius is specific heat. - True

Specific heat is the amount of heat energy required to raise the temperature of a given mass of a substance by a certain amount. It is commonly expressed as J/g·°C or calories/gram·°C. The specific heat of a substance indicates how much energy is needed to change its temperature compared to other substances.