Physical and Chemical Properties and Changes

energy

A change in state involves a change in the ___ of the particles.

precipitate

A final sign that a chemical change has occurred is the formation of a new solid, called a ___.

energy

A second sign that of a chemical change is a change in ____, such as the release of thermal and radiant energy during a fireworks explosion.

filtering

A solid can be separated from a liquid by ___ if the solid does not dissolve in the liquid.

color

A third sign that a chemical change has occurred is a change in ___, such as when fruit rots.

magnet, iron

A(n) ___ can be used to separate materials that contain ____.

chemical, new

A(n) ___ change is a change in matter in which the substances that make up the matter change into other substances that have ___ physical and chemical properties.

chemical

A(n) ___ property is a characteristic of matter that can be observed as it changes to a different substance.

physical property

A(n) ____ is a characteristic of matter that you can observe or measure without changing the identity of the matter.

physical, chemical

All matter can be described by its ____ and _____ properties.

state of matter

Although the matter's identity stays the same, its physical properties might change, such as the size, shape, form, or ___.

volume, burn

For example, the mass and ___ of a wooden log are physical properties, whereas the ability for the wooden log to ___ is a chemical property.

weight, gravity

Mass is sometimes confused with ___, which is the force of the pull of ____ on matter.

identity, chemical

New substances that are formed no longer have the same ____ because they no longer have the same ___ properties.

densities

Oil and water can be separated because they have different ____.

gas

One sign that a chemical change has occurred includes the creation of a ___, which can be observed by the formation of bubbles or the smell of a new odor.

boiling point

Salt and water can be separated because the ____ of water is lower than salt.

deposition

Sometimes, certain gases changes directly to a solid. The gas has undergone ____.

sublimation

Sometimes, when thermal energy is added to certain solids, they change directly from a solid to a(n) gas. The solid has undergone ____.

burn, rust

The ability of a fuel to ___ is one example of a chemical property, and the ability of iron to ___ is another example.

separated

The parts of a mixture can be ____ using the physical properties of the components.

condensation, freezing

When enough thermal energy is removed from a gas for it to change to a liquid, the gas undergoes ___. When enough thermal energy is removed from a liquid for it to change to a solid, the liquid undergoes ___.

faster, increases, attractive

When thermal energy is added to particles, they move ____ and temperature ____. When particles move faster, they can overcome the _____ forces that hold them together.

slower, decreases, attractive

When thermal energy is removed from particles, they move ___ and temperature ____. When particles move slower, they are drawn closer together by ____ forces between them.

state, solid, liquid, gas

___ of matter is a physical property. The common states of matter on Earth are __, ___, and ___.

solubility

the ability of one substance to dissolve in another.

density

the amount of mass per unit volume.

mass

the amount of matter in a sample.

volume

the amount of space something takes up.

physical change

the matter's identity stays the same.

boiling point

the temperature at which a liquid changes to a gas.

melting point

the temperature at which a(n) solid changes to a(n) liquid.