Unit 3 Matter Vocab Review

the smallest unit of an element that maintains the chemical properties of that element

these are reactions that give off heat/energy.

a common chemical method for separating compounds into elements using electricity

no definite volume and takes on the shape of the container

a gas made up of ions and electrons

A type of system that does NOT interact with the surroundings; no exchange of matter or energy.

relates to a substances ability to undergo changes that transform it into a different substance

this term refers to the ending chemicals in a chemical reaction

have visibly indistinguishable parts, appears the same throughout

part of a system that has information about composition and properties for that specific part.

separation by taking advantage of different rates of migration across a sheet of paper

has a fixed composition, can be composed of elements or compounds

refers to a substance made up of two or more different elements.

a change in matter in which the composition of the substance is changed

the study of matter and energy and more importantly the changes between them

What type of observation describes qualities an object possesses?

anything that has mass and takes up space

A type of system that allows the exchange of matter or energy with the surroundings.

is a technique used to separate particles from a suspension (ex: sand & water)

matter formed when temperatures are only a few billionths of a degree above absolute zero

areas outside and surrounding the system.

a specific portion of matter in a given region of space that has been selected for study

forces that hold two or more molecules together to help form a liquid or solid

cannot be broken down in simpler, stable substances; made up of one type of atom

the separation of volatile liquids based on their boiling points

the change from a liquid to a solid

vaporization at the surface of a liquid

the change from solid to liquid

vaporization throughout the liquid

the change from a gas to liquid

A change in state.

reactions that absorb energy/heat

refers to the starting chemicals. These are always found on the left side of the arrow.

the change from a gas to a solid

State of matter with a definite shape and a definite volume.

a graph of one condition vs. another condition

composed of 2 or more elements that can be broken down into simpler stable substances

has a definite volume but takes on the shape of the container

Phase Changes occur when you add or remove heat

does not depend on the amount of material present, these tend to be visible properties

the change from a liquid to a gas

used to separate solid-liquid mixtures such as those in blood.

What type of property can be observed without changing the identity of the substance?

the gas phase of a substance that is normally a solid or liquid at room temperature

Type of mixture with visibly distinguishable parts

the change from a solid to gas

depends on the amount of material present, these tend to be internal properties

made of 2 or more kinds of matter each retaining its own identity; can be physically separated

a state in which 2 or more entities are present in equal amounts in time.