A universal indicator measures ___________.
  • Acidity
  • pH
  • IonsIons
  • Alkali levels
A chemical reaction that produces energy is a /an
  • endothermic reaction
  • exothermic reaction 
  • energy
  • chemical reaction 
What is the law of Conservation of Mass?
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  • A measure of how much mass is created or destroyed. 
  • Mass can neither be created nor destroyed during a chemical reaction. 
The compounds or elements present at the end of a reaction 
  • reactants
  • catalyst
  • products
  • energy 
The compounds and elements that are present at the beginning of a reaction:
  • reactants
  • catalyst
  • products
  • energy 
A chemical change happens when...
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  • a substance is changed at the atomic level 
  • bonds are broken and formed 
  • a new substance is made
  • all of the above! 
What kind of change is a change of state?
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  • Physical
  • Chemical 
The element symbol for Potassium is ...
  • P
  • Po
  • Pt
  • K
Sodium's chemical symbol is...
  • S
  • So
  • Na
  • K
One example of a chemical change is
  • filtering a mixture
  • burning wood
  • boiling water
  • crushing a can
What is the general word equation for a metal and acid reaction?
  • metal + acid --> salt
  • metal + acid --> salt + hydrogen
  • metal + acid --> oxygen + hydrogen
  • metal + acid --> oxygen + water
What subatomic particles would you find in the nucleus of an atom?
  • Protons only
  • Protons and Neutrons
  • Neutrons and Electrons
  • Protons and Electrons 
Which subatomic particles contribute the most to the mass of an atom?
  • Protons, Neutrons, Electrons
  • Protons only
  • Protons and Electrons
  • Protons and Neutrons
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
  • 12 neutrons
  • 12 electrons
  • 12 protons
  • 24 protons and neutrons
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
  • 11
  • 5
  • 6
  • 16
Which letter represents an electron?
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  • A
  • B
  • C
  • D
Which scientist conducted experiments using alpha particles and thin gold foil, which later helped him develop his model for the atom? 
  • Ernest Rutherford
  • Kneels Bore
  • Niels Bohr
  • Earnest Rutherfraud
Which scientist discovered the electron, which helped him develop a model of the atom?
  • Niels Bohr
  • John Dalton
  • Ernst Rutherford
  • J.J Thompson
What is an atom mostly made up of?
  • protons
  • electrons
  • empty space
  • neutrons
An electron has a _____ charge.
  • negative
  • positive
  • neutral
How many electrons can fill up the first electron shell?
  • 2
  • 8
  • 4
  • 6
What does valence energy level mean?
  • The amount of energy an atom has
  • The number of electrons
  • The most outer electron shell of an atom
  • I don't know
Ions having positive charges are
  • Cations
  • atoms
  • Anions
  • molecules
What is an ion?
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  • A Charged Atom
  • A Large Atom
  • A Small Atom
  • A Cute Atom
Why are ions formed?
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  • To make our lives difficult
  • Because atoms want 8 valence electrons
  • Because atoms have the same number of protons and electrons
  • Because atoms gained neutrons
Anions are...
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  • Positive
  • Negative
  • Neutral
  • Crying
Which of the following ions do not have this electron configuration?
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  • O2-
  • F-
  • Na+
  • Be2+
An atom becomes _________ when it gains electrons.
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  • Positive
  • Negative
  • Neutral
  • Invinsible
An atom becomes _______ when it loses electrons.
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  • Positive
  • Negative
  • Neutral
  • Invinsible
Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.
  • n0 ;  atomic #’s
  • p+ ; atomic #’s
  • e- ; atomic masses
  • n0 ; atomic masses
which atom has  4 neutrons?
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  • Li-6
  • Li-7
  • Li-8
  • they have the same # of neutrons
How many neutrons in C-14?
  • 6
  • 7
  • 14
  • 8
A beta particle consists of fast moving electron & has a(n) __________ charge.
  • Positive
  • Negatuve
  • Negative
Unstable nuclei lose energy by emitting radiation in a spontaneous process called radioactive decay.
  • False
  • True
In the equation,  146C --> 147N + 0-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.
  • Radioactive
  • Beta
  • Alpha
  • Gamma
A helium nucleus with two protons and two neutrons is called a(n) ____.  
  • alpha particle
  • electroscope
  • beta particle
  • gamma ray
Which household device often contains a radioactive source?
  • smoke alarm
  • thermostat
  • security alarm
  • water boiler
  • hoover
Which isotope can be used to estimate the age of a dead organism?
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  • Carbon 12
  • Carbon 14
  • Lithium 7
  • Lithium 6
  • Carbon 11
Which of the following is a good description of radioactivity?
  • The energy necessary for the creation of zombies
  • Elements that have unstable nuclei that may decay and result into transformation into a new element
  • The way that atoms of elements clone themselves into new copies
  • The method by which electrons are stripped from atoms to become charged particles
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