D.A.V.I.S.

What is Avagadro’s number?
6.022 x 1023
A chemical formula that shows the chemical composition in the lowest whole number is known as the ________.
Empirical Formula

Stoichiometry is used in many places in automobiles in all the following EXCEPT:

a. Airbags

b. Engines

c. Windows

d. Exhaust

C. Windows
_______ is a branch of science concerned with energy changes accompanying phyical and chemical changes.
Thermodynamics
The SI Unit for energy is ______.
Joules, J
The total energy in a sample (cannot be measured) is known as ______.
Enthalpy
What is the formula used to calculate heat?
q= nC;;; T
________ states that;;;;; H does not depend on the number of steps in a reaction (only the initial and final conditions matter).
Hess’s Law
If      G is negative, a reaction is ________.
Spontaneous
A ________, is a reaction in which a single compound breaks down to form 2 or more simpler substances.
Decompistion Reaction
A ________ is an arrangement of electrons in an atom.
Electron configuration
What principle states that two particles of a certain atom cannot be in the exact same energy state?
Pauli Exclusion Principle
_______ is a measure of the ability of an atom in a chemical compound to attract electrons.
Electronegativity
A ________ is a process by which one or more substances change to produce one or more different substances.
Chemical Reaction
________ is anything that has mass or volume.
Matter
Something that has a uniform structure or compound throughout is known as a _______ mixture.
Homogenous
_________ is composed of dissimilar components.
Heterogeneous
_______ states that mass cannot be created or destroyed in any ordinary chemical and phyical changes.
Law of conservation of mass
The resistence of flow is known as ______. When a liquid has high viscosity, it flows very ______ and vice verca.
Viscosity; slowly

Which of the following compounds have much stronger attractice forces; therefore, more energy is required to separate particles?

a. ionic

b. nonpolar

c. molecular

d. chemistry

a. Ionic compounds
______ is the state where a chemical process and its reverse process happen at the same rate.
Equilibrium

The reaction CO2 (g)        C(s) + O2 (g) is

a. exothermic

b. endothermic

c. isothermic

d. spontaneous

b. endothermic

Which of the following is most likely to have a high boiling point?

a. CO2

b. CH4

c. NaCl

d. H2O

c. NaCl
How many Pascals are in a kiloPascal?
1000 Pascals
How many kiloPascals equal an atmosphere?
101.325 atm

A chemical reaction that is at equilibrium

a. is a reversible reaction

b. doesnt have a forward reaction rate that equals the reaction rate

c. has equal concentrations of reactants and products

d. none of the above

a. is a reversible reaction
Reaction rates decrease with ______.
Time

The definition of rate does not include which of the following?

a. temperature

b. pressure

c. concentration

d. surface area

d. surface area

Sugar in water is an example of which solute-solvent combination?

a. gas-gas

b. liquid-liquid

c. solid-liquid

d. liquid-solid

c. solid-liquid

Carbon dioxide in air is an example of the solute-solvent combination

a. gas-gas

b. gas-liquid

c. gas- solid

d. solid-liquid

a. gas-gas
________ is a base that forms when an acid loses a proton.
Conjugate base
__________ is an acid that forms when a base gains a proton.
Conjugate acid
The reaction of Hydronium ions and Hydroxide ions to form water molecules and salt is known as _______.
Neutralization
The smallest unit of an element that maintains the properties of that element is known as a(n) _______.
atom
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