Chapter 1 Vocab Flashcards
(23 cards)
the process by which one or more substances change to produce one or more different substances
Chemical Reaction
Any substance that has a defined composition
Chemical
the physical forms of matter which are solid, liquid, gas, and plasma
States of Matter
A substance or molecule that participates in a chemical reaction
reactant
a substance that forms in a chemical reaction
product
Anything that has mass and takes up space
matter
a measure of the size of the body or region in three dimensional space
volume
a measure in the amount of matter in an object; a fundamental property of the object that is not affected by the forces that act on the object, such as the gravitational force
mass
a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
Weight
something that has magnitude size or amount
Quantity
A quantity adopted as a standard of measurement
Unit
A ratio that is derived from the equality of two different units and that can be used to convert from one unit to the other
Conversion Factor
A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
Physical Property
the ratio of the mass of a substance to the volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases
Density
a property of matter that describes a substance’s ability to participate in chemical reactions
Chemical Property
the smallest unit of an element that maintains the properties of that element
Atom
A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Pure Substance
A substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number
Element
the smallest unit of a substance that keeps all of the physical and chemical properties of the substance; it can consist of one atom or two or more atoms bonded together
Molecule
a substance made up of atoms of two or more different elements joined by chemical bonds
Compound
a combination of two or more substances that are not chemically combined
Mixture
composed of dissimilar components
heterogeneous
describes something that has a uniform structure or composition throughout
homogeneous
