chapter 3 quizizz - chem final

A compound is a substance that cannot be broken down into a simpler substance.

• true

• false

In a solid substance, the atoms or molecules oscillate and vibrate about a fixed point.

• true

• false

The corrosion of iron is a physical change.

• true

• false

The energy of position is called kinetic energy.

• true

• false

Temperature is simple a measure of the motion of atoms and molecules.

• true

• false

Which of the following items is a pure substance?

• air

• seawater

• brass

• ice

When methane is burned with oxygen, the products are carbon dioxide and water. If your produce 9 grams of water and 11 grams of carbon dioxide from 16 grams of oxygen, how many grams of methane were needed for the reaction?

• 4

• 20

• 31

• 40

Which type of energy is associated with position?

• chemical

• electrical

• potential

• kinetic

If a solid piece of shiny sodium metal is exposed to chlorine gas, a large amount of heat is released and the white solid sodium chloride (table salt) forms. Based on this information, which of the following statements is TRUE?

• This process represents a physical change.

• Mass is lost during this process.

• NaCl is an element.

• The reaction is exothermic.

In order, what is the freezing point, room temperature, and boiling point of water according the Celsius scale?

• 32-75-212

• 0-75-100

• 0-25-100

• 0-298-373