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Chemistry Unit 1 Vocab 2021
Terms in this set (46)
Smallest particle of an element that still has its properties; made up of protons, neutrons, & electrons
Describes how matter reacts or changes, such as flammability
Type of reaction in which matter is changes and creates a new substance
Represents a chemical compound, such as HCl or NaF
Represents a chemical element, such as H or O
Two or more substances that are chemically combined; represented by chemical formulas
Calculated by dividing an object's mass by its volume
Simplest pure substance, represented by a chemical symbol
Amount of matter in an object; does not change with changes in gravity
Any substance that has mass and volume;
Describes the appearance and other characteristics of matter
Change in size, shape, or state; does not create a new substance
Mixture in which one substance is dissolved in another, such as lemonade or Kool-Aid
Amount of space an object takes up
Measure of the force of gravity acting on an object; changes with changes in gravity (such as weighing less on the moon)
A mixture in which particles of one substance are spread evenly throughout another (no dissolving), such as clouds
Type of mixture in which you are able to see the particles that make it up
A mixture in which substances are evenly distributed throughout the mixture
States that the buoyant force is equal to the weight of the fluid displaced by an object.
The pitch heard from tapping a cup of hot liquid, such as hot chocolate, rises after the addition of a soluble powder.
Occurs as a gas turns to a solid, such as water vapor turning to frost
A change directly from the solid to the gaseous state without becoming liquid
The change in state from a solid to a liquid
The change of state from a liquid to a solid
The change of state from a liquid to a gas; includes boiling and evaporation
Vaporization that occurs at the surface of the liquid
Vaporization that occurs throughout a liquid
The change of state from a gas to a liquid
A temperature scale based on absolute zero
The temperature scale on which water freezes at 0 degrees and boils at 100 degrees
The temperature scale on which water freezes at 32 degrees and boils at 212 degrees
A state of matter that has a definite shape and a definite volume
A state of matter that has no definite shape but has a definite volume.
A state of matter with no definite shape or volume as it takes up available space
a state of matter that starts as a gas and then becomes ionized
Energy of motion
Property that describes a material's ability to burn in the presence of oxygen
A rapid reaction between oxygen and fuel that results in fire
The property that describes how readily a substance combines chemically with other substances
Property describing the degree to which a substance is biologically harmful.
A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
A measure of the average energy of motion of the particles of a substance.
A solid that forms from a solution during a chemical reaction.
Chemical reaction that breaks down food substances into simpler forms that can be absorbed and used
A combination of two or more substances that are not chemically combined; may be solutions, colloids, or suspensions
A mixture in which particles can be seen and easily separated by settling or filtration
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