Chemistry Ch 1
Terms
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- Volume
- the amount of three-dimensional space an object occupies
- Physical Change
- a change in a substance that does not involve a change in the identity of the substance
- Matter
- anything that has mass and takes up space
- Nonmetal
- many nonmetals are gases room temperature brittle solids low conductivity
- Theoretical
- the use of mathematics and computers to understand the principles behind observed chemical behavior and to design and predict the properties of new compounds
- Period
- a horizontal row of elements in the periodic table
- Atom
- the smallest unit of an element that maintains the properties of that element
- Intensive Property
- Does not depend on the amount of matter present
- Physical
- the study of the properties and changes of matter and their relation to energy
- Metal
- an element that is a good conductor of heat and electricity malleable ductile tensile strength
- Mass
- a measure of the amount of matter
- Compound
- a substance that is made from the atoms of two or more elements that are chemically bonded
- Mixture
- a blend of two or more kinds of matter, each of which retains its own identity and property
- Change of State
- a physical change of a substance from one state to another solid liquid gas
- Chemical Property
- a change in which one or more substances are converted into different substances
- Extensive Property
- Depends on the amount of matter that is present
- Solid
- has definite volume and definite shape
- Biochemistry
- the study of substances and processes occurring in living things
- Homogeneous Mixture
- uniform in composition solutions
- Physical Property
- A characteristic that can be observed or measured without changing the identity of the substance
- Analytical
- the identification of the components and composition of materials
- Noble Gases
- group 18 not reactive
- Organic
- the study of most carbon-containing compounds
- Chemistry
- the study of the composition, structure, and properties of matter and the changes it undergoes
- Reactant
- the substances that react in a chemical change
- Element
- a pure substance made of only one kind of each atom
- Plasma
- high temperature physical state of matter in which atoms lost their electrons
- Group
- a vertical column of the periodic table
- Product
- the substances that are formed by the chemical change
- Pure Substance
- A fixed composition
- Metalloid
- has some characteristics of metals and nonmetals
- Liquid
- has definite volume and indefinite shape
- Heterogeneous Mixture
- not uniform throughout in composition
- Chemical
- any substance that has a definite composition
- Gas
- has indefinite volume and indefinite shape
- Inorganic
- the study of all substances not classified as organic, mainly those compounds that do not contain carbon
- Molecule
- the smallest unit of an element or compound that retains all of the properties of that element or compound