Fill in the Blank
A _______________ consists of two or more elements chemically combined.
COMPOUND
80mm
State the First Law of Thermodynamics.
Matter and energy cannot be created or destroyed.
Reactions release heat into the environment. (Heat is a product.)
EXOTHERMIC
Name the three states of matter.
SOLID
LIQUID
GAS
Which has the most kinetic energy?
Solid Liquid Gas
GAS
PCI5
PHOSPHORUS PENTACHLORIDE
_____________ is defined as mass per unit of volume.
DENSITY
Convert 2.3 km to ______m
2300 m
State the Second Law of Thermodynamics.
Entropy is always increasing in the universe.
Reactions have heat as a reactant.
ENDOTHERMIC
The complex mixture of liquid hydrocarbons found in the earth's crust is called ________________.
PETROLEUM OR CRUDE OIL
Atoms of the same element that differ in mass number are called
Compounds Isotopes Simulations Neutralizers
ISOTOPES
SiO2
SILICON DIOXIDE
____________ _______________ is the energy possessed by matter due to its motion.
KINETIC ENERGY
Convert 7600 m to ______km
7.6 km
6.022 X 1023 is known as _____________ ___________ and is equal to one _______ of anything.
AVAGADVO'S NUMBER
MOLE
The branch of chemistry concerned with living things.
BIOCHEMISTRY
This group of lipids includes cholesterol, bile salts, and vitamin D. What group is it?
STEROIDS
Which law relates the volume, pressure, temperature, and number of moles of a gas?
Avogadro's Law Combined Gas Law Ideal Gas Law
IDEAL GAS LAW
NO
NITROGEN MONOXIDE
The force of gravity upon an object is its _____________.
WEIGHT
Convert 4376g = ______kg
4.376 kg
Define atomic mass.
The atomic mass unit definition is that it is one-twelfth of the mass of a carbon-12 atom, which is the most abundant isotope of carbon found in nature.
Them most abundant element in the universe is ________________.
HYDROGEN
Sodium or potassium salts of fatty acids like
Dove Caress Lava
Zum Bar Dial Ivory
Spring Fresh Myers
SOAP
What type of substituted hydrocarbon is the following molecule?
CH3CH2 -----N ----CH2CH3
| amide amine
H aldehyde alcohol
AMINE
CARBON TETRAFLUORIDE
All atoms of the same element have the same number of ______________ in the nucleus.
PROTONS
Absolute zero is ________________________ or -273._____ degrees Celsius.
0 Kelvin
-273.15 degrees Celcius
In a reversible, chemical reaction represented A + B yields AB, how would adding more of substance A to the system affect the equilibrium?
It would shift right.
C + O2 yields CO2
What type of reaction is this?
COMBINATION
The minimum kinetic energy that a molecule must possess to undergo a chemical reaction is called the _______ energy.
ACTIVATION
What type of substituted hydrocarbon is the following molecule?
OH amide alcohol
| aldehyde amine
CH3CH2CH3
ALCOHOL
NaOH
SODIUM HYDROXIDE
_______________ is a semimetal used in making computer chips.
SILICON
Find the molar mass of UF6
352
U = 238.0289
F = 18.998403 (6) = 113.9904184
add together = 352.019318 ~ 352
What element is ozone a form of?
oxygen
2Al2 yields 4Al + 3O2
What type of reaction is this?
DECOMPOSITION
Name the 4 observations that show a chemical change.
1 - formation of a gas
2 - formation of precipitation
3 - change in color
4 -liberation of heart or light
What type of substituted hydrocarbon is the following molecule?
O amide amine
|| aldehyde alcohol
CH3 ---C---H
ALDEHYDE
CALCIUM CARBONATE
________ Biological polymers composed of long chains of sugars
POLYSACCHARIDES
Find molar mass CaCO3
100.09 g
What are aromatic hydrocarbons?
Aromatic Hydrocarbons are hydrocarbons that consist of rings containing delocalized electrons.
2 Na + 2H2O yields H2 + 2NaOH
SINGLE DISPLACEMENT
An atom that gains electrons in a chemical reaction is said to undergo _______
REDUCTION
What is the PH of 1 x 10-3 M solution of HCI?
3 6 9 12
3
PbSO4
lead sulfate
_____________Protein catalyst found in living things
4
What are alkynes?
Hydrocarbons characterized by one or more triple bonds between carbon atoms.
The outermost electrons in an atom, which are involved in chemical bonding, are called the atom's _____________ electrons.
VALENCE
The elements helium, argon, and xenon belong to the group _________
noble gases chalcogens halogens semimetals
CHALCOGENS
What is the oxidation number of carbon in the iron ore siderite (FeCO3)?
-4 -2 +2 +4
+4
Name the following compound:
CH3CH2CH2CH2CH3
ethane octane pentane butane
PENTANE