Chemistry MidTerm

The study of the composition, structures, and properties of matter and the changes it undergoes.
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Terms in this set (26)
The study of the composition, structures, and properties of matter and the changes it undergoes.
Chemistry
The 3 types of chemical research:
Basic Research, Applied Research, and Technological Development
Any substance that has a definite composition.
Chemical
A measure of the amount of matter.
Mass
Anything that has mass and takes up space.
Matter
The smallest unit of an element that maintains the properties of that element.
Atom
A pure substance made of only one kind of atom.
Element
A change in which one or more substances are converted into different substances.
Chemical Change
A change in a substance that does not involve a change in the identity of the substance.
Physical Change
What are the 3 states of matter?
Solid, liquid, and gas
Matter state that has a definite volume and definite shape. Particles are packed tightly together.SolidMatter state that has a definite volume but an indefinite shape. Particles are packed close together but can still move by one another.LiquidMatter state that has neither definite volume nor definite shape. Particles are a great distance from one another.GasThe vertical columns of the periodic table.GroupsThe horizontal columns of the elements in the periodic table.PeriodsWhat are the 4 types of elements?Metals, Metalloids, Non-Metals, and Noble GasesWhat are the 5 stages of the scientific method?Observing, Formulating Hypotheses, Testing, Theorizing, Publish ResultsWhat is Hypothesis?A testable statementWhat is the metric units for length and mass?Length = m Mass = kgThe ratio of mass to volume, or mass divided by volume.DensityComposition of an Atom:Protons, Neutrons, and ElectronsAtoms of the same element that have different masses.IsotopeThe amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon-12.Mole6.022 x 10²³ - The number of particles in exactly one mole of a pure substance.Avogadro's NumberThe lowest energy state of an atom.Ground StateThe state of an atom that has a higher energy state than ground state.Excited State