Chemistry 1122 Self Test

mole

6.022 x 10 to the 23rd particles

According to the __________________, it is impossible to determine the exact location and velocity of an electron at any given moment

Heisenberg uncertainty principle

nitrogen

N

isotope

form of an element with the same atomic number but a diferent mass number

isotope

form of an element with the same atomic number but a different mass number

colloid

heterogeneous combination in which particles of one substance are suspended in another

mixture

heterogeneous combination of two or more substances that retain their individual properties

compound

homogeneous combination whose elements checmically combine in definite proportions

solution

homogeneous combination with a uniform consistency whose components do not chemically combine in definite proportions

A colloidal particle is a central particle surrounded by ____________

ions

atomic mass

mass of a quantity of atoms compared to the mass of the same quantity of carbon 12

solute

material being dissolved in a solution

solvent

material in which some other material is dissolved in a solution

Hg

mercury

anion

negatively charged ion

fractional crystallization

two crystalline solids

chromatography

two liquids with differing affinities

distillation and fractional distillation

two liquids with differing boiling points

alpha particle

two protons and two neutrons

filtration

undissolved solid in a liquid

potassium

K

conservation of mass

Law in an ordinary chemical reaction, the total mass of the reactants is equal to the total mass of the products.

multiple proportions

Law when two elements form two or more different compounds, the ratios of the masses of the second element that combine with a fixed mass of the first element can always be expressed as a small whole number.

quantum

a discrete quantity of energy

If a matter particle and an antimatter particle of equal mass come in contact with each other, the result is _____________ and result of tremendous

annihilation

amu

atomic mass units

The purpose of an ______________ is to explain the behavior of atoms by summarizing the facts known about them

atomic model

molecule

bonded collection of two or more atoms of the same or different elements

chromatography

gas in a gas

quarks

subatomic particles that are components of protons and neutrons

heterogeneous

substance with regions of differing properties

homogeneous

substance with uniform properties throughout

atomic number

number of protons in the nucleus of an atom

mass number

total number of particles in an atoms nucleus

According to the ______________ model of the atom, electrons do not follow orbits but form an electron could as they moved around the nucleus in orbitals

wave mechanical

seborgium

Sg

definite proportions

Law where a given compound always contains the same exact proportion of elements by mass.

lead

Pb

Ca

calcium

properties

characteristics that distinguish one substance from other substances

Cu

copper

cyclotron

device that accelerates particles in a spiral path

Au

gold

physical properties

observable properties

electron

one of the three subatomic particles of importance to chemists

O

oxygen

cation

positively charged ion

chemical properties

properties that describe how a substance chemically reacts with other substances

The ____________ proposed by Max Planck states what energy can only be absorbed or emitted in specific amounts called ____________

quantum theory, quanta

Tyndall effect

scattering of light by particles in a colloid

element

simplest homogeneous substance

atomic model

simplified image or description that represents the complex concept of the atom

atom

smallest particle that retains all properties of an element

Na

sodium

distillation

solid dissolved in a liquid

filtration

solid in a gas