ACS GEN CHEM 1 FINAL Questions and Answers.
the physical material of the universe. It is anything that has mass and occupies
space.
Matter
is made up of relatively few elements.
Matter
The smallest building block of matter. Smallest particle that retains the chemical
property of the element (O, He, S).
Atom
Each _______ is made of the same kind of atom
Element
Combination of atoms held together in specific shapes
Molecule
No fixed volume or shape conforms to
volume and shape of the container is compressible
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
Liquid
Rigid with a definite shape, very slightly compressible
Solid
these stable diatomic
H2,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
Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without changing a substance
into another substance
Physical Properties
Describes the reactivity of a substance. Can only be observed when a substance
is changed into another substance
Chemical properties:
Does not depend on amount.
Intensive property :
Depends on amount.
Extensive property
Substances transform into chemically different substances
Chemical change
, No change in chemical composition
Physical change
How close to the true value a given measurement is.
Accuracy
How well a number of independent measurements agree with one another.
Precision
Electrons were discovered by ______ in 1897, while
Millikan's Oil Drop experiment determined its charge.
• Neutrons were discovered by James Chadwick in 1932.
J.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.
Rutherford
Protons were discovered by______in 1919.
Rutherford
Neutrons were discovered by________ in 1932.
James 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.
Dalton's Atomic Theory
Organic alkANEs
Mother Eats Peanut Butter:
Methane: CH4
Ethane: C2H6
Propane: C3H8
Butane: C4H10
...then greek prefixes
Uniform throughout, air, milk, sea water
Homogeneous mixture
Not uniform, chocolate chip cookie
Heterogenous mixture
When an element has a change in mass number, or neutrons
isotope
the physical material of the universe. It is anything that has mass and occupies
space.
Matter
is made up of relatively few elements.
Matter
The smallest building block of matter. Smallest particle that retains the chemical
property of the element (O, He, S).
Atom
Each _______ is made of the same kind of atom
Element
Combination of atoms held together in specific shapes
Molecule
No fixed volume or shape conforms to
volume and shape of the container is compressible
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
Liquid
Rigid with a definite shape, very slightly compressible
Solid
these stable diatomic
H2,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
Law of Constant (Definite) Composition
characteristics of a substance. Can be observed without changing a substance
into another substance
Physical Properties
Describes the reactivity of a substance. Can only be observed when a substance
is changed into another substance
Chemical properties:
Does not depend on amount.
Intensive property :
Depends on amount.
Extensive property
Substances transform into chemically different substances
Chemical change
, No change in chemical composition
Physical change
How close to the true value a given measurement is.
Accuracy
How well a number of independent measurements agree with one another.
Precision
Electrons were discovered by ______ in 1897, while
Millikan's Oil Drop experiment determined its charge.
• Neutrons were discovered by James Chadwick in 1932.
J.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.
Rutherford
Protons were discovered by______in 1919.
Rutherford
Neutrons were discovered by________ in 1932.
James 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.
Dalton's Atomic Theory
Organic alkANEs
Mother Eats Peanut Butter:
Methane: CH4
Ethane: C2H6
Propane: C3H8
Butane: C4H10
...then greek prefixes
Uniform throughout, air, milk, sea water
Homogeneous mixture
Not uniform, chocolate chip cookie
Heterogenous mixture
When an element has a change in mass number, or neutrons
isotope
