Chemical/Physical/StateM

Which of the following statement(s) is/are true about chemical changes? You may select more than one statement.

• New substance(s) is/are formed.

• The substances that react with one another are known as the “products”.

• Chemical changes are usually not reversible.

• Energy may be taken in or given out during chemical changes.

• New substances cannot be formed

Which of the following statements correctly describes combustion?

• Combustion is a physical change in which a substance is heated in the presence of carbon dioxide.

• Combustion is a chemical change in which a substance is heated in the presence of carbon dioxide.

• Combustion is a physical change in which a substance is heated in the presence of oxygen.

• Combustion is a chemical change in which a substance is heated in the presence of oxygen.

The appearance, shape, or size of a substances may be altered during a _________________.

Chemical changes may result in products in different physical states which sometimes when liquids combine to form a solid it’s called a ___________.

Which of the following is a physical property?

• vinegar has a sour odor (smell)

• magnesium is very flammable

• zinc fizzes when placed in acid

• density of water

When a new substance is formed with different properties than the original substance it is called a _____________

How do higher temperatures influence a chemical change?

Which below are types of physical properties:

• density

• color change

• temperature

• mallelable

• solubility

Which of the following are examples of chemical properties (more than one)

• combusts

• reacts with water and oxygen

• ductile

• is weighed in grams

• has a sour taste

How does particle motion affect the properties of solids, liquids, and gases?