1.Quiz- Ch 7 Foundations of Chemistry

1. What is a compound?

• a) Several elements that have chemically bonded together

• a) Any substance with more than two atoms

• a) Any chemical process involving oxygen

• a) One element consisting of chemically bonded atoms

What is the classification of mixture?

• pure substance

• compound and element

• homogeneous and heterogeneous

• compound and homogeneous

An _______________ is made up of one or more of the same kind of atom chemically combined.

• atom

• molecule

• element

• compound

A _____________ contains a variety of elements and compounds that are not chemically combined with each other.

• compound

• molecule

• element

• mixture

What is matter?

• anything that has mass and takes up space
• a substance that consists of one type of atom
• a small particle that is a building block 
• the amount of mass per unit volume

The melting point refers to

• the point at which a liquid turns into a gas.
• the point at which a solid turns into a liquid.
• a substances ability to conduct thermal electricity.
• the amount of space something takes up.

Which of the following is an example of a size-dependent physical property?

• volume
• state of matter
• conductivity
• boiling point

Which of the following terms best describes a change in shape, size, form, or state of matter in which the identity of the substance stays the same?

• chemical change
• element
• physical change
• conductivity

What happens to the particles in a substance when thermal energy is removed?

• the particles move faster
• the particles speed does not change
• the particles move slower

The ________________ is best described as particles are neither created nor destroyed during a physical or chemical change.

• Law of Conservation of Mass
• Chemical Reaction
• Chemical Equation
• Change in Thermal Energy