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IPC Fall Final
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It has the chemical formula Ca(OH)2. (2 should be a subscript)
The splitting of large nucleus into two smaller nuclei or approximately equal size is called
Metals can be used as a wire because they are _____.
A chemical symbol represents the ____ of an element
The nucleus of most atoms is composed of
tightly packed protons
tightly packed protons and neutrons
loosley connected protons and electrons
tightly packed neutrons
Numbers that precede symbols and formulas in a chemical equation are _____.
Each substance on the left side of the arrow in a chemical equation?
When a chemical splashes into your eyes, you should use the
eye wash station
It can be corrosive.
In solution, feels slippery.
A(n) ____ is a substance that producs H+ ions in a water solution.
Each substance to the right of the arrow in a chemical equation is a(n) _____.
In a solution, the substance that is being disolved is the
How many electrons are needed in the outer enrgy levels of tmost atoms for th atom to be chemicall stable (happy)?
A particle that moves around the nucleus is a(n) _____.
When chemcial reactions take place, all products _________ the reactants.
A(n) _____ chemical equation has the same number of atoms of each element on each side of the equation.
The elements in Groups 3 through12 of the periodic table are the ______.
alkaline earth metals
A fluid’s resistance to flow is called ____ (how thick is the liquid).
____ is NOT a homogeneous mixture.
Chocolate chip cookie
Elements that are gases, are brittle, and are poor conductors at room temperature are _____.
What of the following is a physical change?
Mendeleev is credited with developing the first successful (hint #101)
method of determining atomic number
test for radioactivity
use of X rays
To neutralize gastric juices in your stomach, antacids contain ___.
The prefix kilo- means
The total number of protons and neutrons in the nucleus of an atom is its
number of neutrons
According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?
The mass of the products is greater
The mass of the reactants is greater
There is no relationship
The masses are equal
Ions are atoms of the same element that have different
number of electrons
number of protons
principal chemimcal properties
Which of the following is te formula of a compound?
Which is a group of nonmetals
Matter that has a definite volume and a definite shape is a ____.
When you break a beaker during lab, what should you do?
Walk away, and do not tell any one
Continue with the lab
Argue about who was at fault
Tell the teacher
Matter in which the particles are free to move in all directions until they have spread evenly throughout a container is a ___.
____ measures how acidic or basic a substance is.
The hydronium ion
It has a sour taste.
The atomic number of lithium, th first element in Group 1, is 3. The atomic number of the second element in this group is _____.
The only metal that is a liquid at room temperature is ____.
If heat must be added to a chemical reaction for the reaction to take place, the reaction is _____.
Atoms of the same element with different numbers of neutrons are called ______.
Approximately how many chemical elments are there?
The particles of any liquid are constatly moving.
The noble gases are in ______.
What kind of chemical bond is formed when a transfer of electrons occurs?
Increasing the surface are of a solid _____ (grinding).
speeds the rate of solution
slows the rate of solution
causes th solid to ionize
has no effect on the rate of solution
Chlorine has atomic number 17 and mass number 35. It has
18 protons, 18 electrons, and 17 neutrons
17 protons, 17 electrons, and 18 neutrons
17 protons, 17 electrons, and 52 neutrons.
35 protons, 35 electrons, and 17 neutrons.
The elements that border the zigzag line in the periodic table are
At room temperature, most metals are ____.
Most matter _____ when heated.
A positively charged particle with mass is a(n)
The oceans are an example of a(n) ____ solution.
Why do the noble gases NOT form compounds readily?
Their outermost energy levels are completly filled with electrons.
They have seven electrons in the outer energy levels.
They have empty outer energy levels.
They have no electrons.
The shape of an apple is a ____.
It has a bitter taste.
A bitter tast and a slippery feel are clueds that a solution is probably a(n) _____.
It reacts with an indicator to produce a change in its color.
The principal of Waxhachie High School is?
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.
It has th chemical formula HNO3. (3 should be a subscript)
According to the law of conservation of mass, if two atoms of hydrogen are used as a reactant, how many atoms of hydrogen must be part of the product?
Bouyancy explains why _____.
heat of fusion exists
heated objects expand
The most useful source of general information about the elements for anyone associated with chemistry is a
table of metric equivalents
table of isotopes
Three examples of physical change are ______.
freezing of water, evaporation of gasoline, and rusting a nail
burning of gasoline, rotting of an egg, and exploding fireworks
sawing of wood, crushing a can, and toasting a marshmallow
boiling of water, bursting of a balloon, and crumpling a piece of paper
How many total hydrogen atoms are present in one molecule of ammonium acetate, NH4C2H3O2. All numbers should be small, subscripts.
A chemical bond that occurs when atoms share electrons is a(n) _____ bond.
Argon, krypton, and xenon are
alkaline earth metals
The appearance of solid metals can be described as ____.
The breaking down of a substance into two or more simpler substances is _____.
Which of the following is a balanced chemcial equation? (Look on the board for the answer choices)
When a log burns in a fire, ______.
physical change has occured
mass is lost
mass is gained
new substances are formed
A chemical reaction in which heat energy is released is _____.
Particles of liquids and gases move much more freely than do particles of solids.
A substance that does conduct an electric current when it forms a solution is a(n) ____.
The particles that make up a solid are ________ than those that make up a gas.
the same density
Both fusion and fission reaction ____.
causes chain reaction
take place at room temperature
use hydrogen as a fuel
What color is on the American flag?
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