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.