Matter & Energy
Atoms & Elements
Molecules & Compounds
Chemical Composition
Chemical Reactions
100
a substance that occupies space, has mass, and cannot be created or destroyed easily
What is matter
100
the smaller unit of an element that still has the properties of that elements
What is a atom
100
a group of atoms bonded together; smallest unit of a chemical compound that can be taken apart in a chemical reaction
What is a molecule
100
an expression representing a chemical reaction
What is a chemical equation
100
the study of properties of matter and how matter changes
What is chemistry
200
when energy moves from warm objects to cooler objects by physical contact
What is conduction
200
a subatomic particle that has a positive charge
What is a proton
200
a mixture composed of two or more separate elements
What is compound
200
a chemical change in which two or more substances react to form a single new substance
What is a combustion reaction
200
changes that alter the form or appearance of a material but not a new substance
What is physical changes
300
energy that travels in the form of electromagnetic waves across distances
What is radiation
300
the center of an atom, usually contains protons and neutrons
What is a nucleus
300
a particular kind of matter with uniform properties
What is substances
300
it indicates whether the reactants or products are favored in the reversible reaction
What is equilibrium
300
a change to matter that produces a new substance with new properties
What is chemical change
400
amount of energy something has based on the movement of its particles
What is thermal energy
400
a subatomic particle that orbits an atoms' nucleus, has a negative electric charge, and has very little mass
What is a electron
400
heat absorbing
What is endothermic
400
arrow in a reaction which means "produces"
What is yields
500
when energy is moved in gases and liquids when a warmer gas or liquid is pushed up be a cooler gas or liquid
What is convection
500
the number of protons in a atom
What is a atomic number
500
the properties of attraction possessed by magnets; the molecular propertied common to magnets
What is magnetism
500
a substance that speeds up a reaction without being used up
What is catalyst
500
during a chemical reaction, matter is not created or destroyed; it is only changed
What is law of conservation of mass or matter
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