Science Category 4 Lesson

Multiple Select

Which of the following is true about chemical reactions?

• They are accompanied by changes in energy

• They form new substances with new properties

• none of these

Multiple Choice

In an endothermic reaction, energy is

• absorbed

• released

• converted to mass

• synthesized

Multiple Choice

Which of the following is NOT a physical property?

• melting point

• state of matter

• density

• flammability

Multiple Choice

Substances formed as a result of a chemical reaction are called

• catalysts

• precipitates

• products

• reactants

Multiple Choice

In an exothermic reaction, products have more energy than reactants.

• True

• False

Multiple Choice

Water boils at 100°C. This is an example of a chemical property.

• True

• False

Multiple Choice

Substances that enter into a chemical reaction are called products.

• True

• False

Multiple Choice

The ability to react with oxygen is an example of a chemical property.

• True

• False

Multiple Choice

Another name for a chemical change is a chemical bond.

• True

• False

Multiple Choice

In a physical change, some of the physical properties of the substance may be altered and the chemical composition remains the same.

• True

• False