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ACS GEN CHEM 1 FINAL QUESTIONS AND ANSWERS 100% CORRECT
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ACS GEN CHEM 1 FINAL
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ACS GEN CHEM 1 FINALthe physical material of the universe. It is anything that has mass and occupies space. -
answer Matter
is made up of relatively few elements. - answer Matter
The smallest building block of matter. Smallest particle that retains the chemical
property of the element (O, He, S). - answer Atom
Each _______ is made of the same kind of atom - answer Element
Combination of atoms held together in specific shapes - answer Molecule
No fixed volume or shape, conforms to
volume and shape of container, is compressible - answer Gas
Individual particles are confined to a given volume, liquid flows (no definite shape) and
assumes the shape of its container up to the volume of the liquid, slightly compressible -
answer Liquid
Rigid with definite shape, very slightly compressible - answer Solid
these stable diatomics - answerH2,O2, N2, and the Halogens (F2, Cl2, Br2, I2)
Different samples of any pure compound contain the same elements in the same
proportion by mass - answerLaw of Constant (Definite) Composition
characteristics of a substance. Can be observed without changing a substance into
another substance - answerPhysical Properties
Describes the reactivity of a substance. Can only be observed when a substance is
changed into another substance - answerChemical properties:
Does not depend on amount. - answerIntensive property :
Depends on amount. - answerExtensive property
Substances transform into chemically different substances - answerChemical change
No change in chemical composition - answerPhysical change
, How close to the true value a given measurement is. - answerAccuracy
How well a number of independent measurements agree with one another. -
answerPrecision
Electrons were discovered by ______ in 1897, while
Millikan's Oil Drop experiment determined its charge.
• Neutrons were discovered by James Chadwick in 1932. - answerJ.J. Thompson
Postulated a very small, dense nucleus with the electrons around the outside of the
atom. Most of the volume of the atom is empty space. - answerRutherford
Protons were discovered by______in 1919. - answerRutherford
Neutrons were discovered by________ in 1932. - answerJames Chadwick
1) All matter is made of atoms. Atoms are indivisible and indestructible.
2) All atoms of a given element are identical in mass and properties
3) Compounds are formed by a combination of two or more different kinds of atoms.
4) A chemical reaction is a rearrangement of atoms. - answerDalton's Atomic Theory
Organic alkANEs - answerMother Eats Peanut Butter:
Methane: CH4
Ethane: C2H6
Propane: C3H8
Butane: C4H10
...then greek prefixes
Uniform throughout, air, milk, sea water - answerHomogeneous mixture
Not uniform, chocolate chip cookie - answerHeterogenous mixture
When an element has a change in mass number, or neutrons - answerisotope
A species of an element in which the number of electrons does not equal the number of
protons. - answerIon
Each isotope of an atom has a different number of neutrons. - answerIsotope
mols/L; mmols/mL - answerMolarity
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