Atomic Theory
Substance made from a single type of atom
Element
Matter that has a definite volume and shape
Solid
Substance with two or more types of elements linked together
Compound
Amount of matter in an object
Mass
Two or more kinds of substances combined physically but not bonded chemically
Mixture
Ability to do work and change matter
Energy
Method for separating magnetic materials from nonmagnetic materials in a mixture
Magnetism
Table of the elements arranged in a certain order
Periodic table of the elements
New substance produced in a chemical reaction
Product
States that the total mass of substances stays the same before and after an interaction
Homogeneous mixture in which one kind of substance is dissolved into another
Solution
Tiny particles that make up all matter
Atoms
Temperature at which a liquid changes to a solid
Freezing point
States that all matter is made of atoms which combine in different ways to form different substances
Atomic theory of matter
Matter that has a definite volume but can flow and change its shape to fill a container
Liquid
Metal
Measure of the pull of gravity on an object
Weight
Heterogeneous mixture whose particles are large enough to settle out
Suspension
Push or pull on an object
Force
Method for separating solid materials from liquid materials in a mixture
Filtration
Change of a substances molecular structure; often forms a new substance
Chemical change
Beginning substance in a chemical reaction
Reactant
Ability of one substance to dissolve into another
Solubility
Part of a solution that is dissolved
Solute
Neutral subatomic particle with no charge
Neutron
Temperature at which a liquid rapidly changes to a gas
Boiling point
Positive center of an atom; made of protons and neutrons
Nucleus
Matter that has a varying volume and can flow and change its shape to fill a container
Gas
Two or more atoms linked together
Molecule
Amount of space matter takes up
Volume
Heterogeneous mixture with tiny, suspended clumps or particles
Colloid
Change in position
Motion
Method for separating solids from liquids in solutions
Evaporation
Study of the composition and interactions of matter
Chemistry
Process in which atoms are rearranged within molecules and new substances form
Compound produced by a reaction between an acid and a base
Salt
Part of a solution that dissolves another
Solvent
Subatomic particle with a positive electric charge
Proton
Temperature at which a solid changes into a liquid
Melting point
Number of protons in an atom's nucleus
Atomic number
Change in physical property
Physical change
Solid element with properties of both metals and nonmetals
Semimetal
Measure of how tightly packed molecules are in an object
Density
Not completely mixed
Heterogeneous
Physical substance that has weight and takes up space; Has inertia
Matter
Method for separating solid materials from each other in a mixture
Sifting
Study of matter and energy; Includes the branches of physics and chemistry
Physical science
Sour substance containing hydrogen that reacts with many metals to produce hydrogen gas
Acid
Bitter substance that reacts with acids to neutralize them
Base
Measure of how much solute is in a solvent
Concentration
Subatomic particle with a negative electric charge outside an atom's nucleus
Electron
Process of change from one state to another
Transition
Study of interactions between matter and energy
Physics
Characteristic of matter that does not change the identity of a substance
Physical property
Element that is typically a poor conductor; some are gases
Nonmetal
Characteristic of matter that changes the identity of a substance; can change during chemical reactions
Chemical property
Completely and uniformly mixed; having the same physical properties throughout
Homogenous
Property of matter that makes it resist changes in motion
Inertia
Method for separating liquids with different densities from one another in a mixture
Magnetism
Letter or pair of letters which represent an element
Chemical symbol
Substance that is neither an acid nor a base
Neutral
Range from 0 to 14 in which scientists measure how acidic or basic a substance is
Rate it takes for a solvent to dissolve a solute
Dissolving rate
Any of the smaller particles that make up atoms
Subatomic particle
To change a liquid into a gas
Vaporize