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Term 1 Chemistry Final
Test Description: Term 1 General Chemistry Final
Instructions: Answer all questions to get your test result.
1) Which of the following are supporting evidences that matter in the universe has a common origin
A
Humans look kind of like monkeys
B
Continental Drift
C
Atoms look like building blocks
D
Cosmic background radiation
2) Who's postulate states that an atom of nitrogen found on Earth will be the same as any other
A
Dalton
B
Niels Bohr
C
Dr. Seuss
D
Plato
3) Which is an example of a mixture?
A
Rust
B
Saltwater
C
Superman
D
table Salt
4) An orbital is defined as_____
A
A place where the nucleus is always found.
B
A region of space with high probability of electron presence
C
A defined distance from the center of the atom
D
A brand of gum
5) What is the name of the negatively charged particles in an atom?
A
Electrons
B
Protons
C
Orbitals
D
Neutrons
6) Who was the first individual to suggest the existence of atoms
A
Arisotle
B
Mr. Lundgreen
C
Plato
D
Democritus
7) What was significant about Rutherford’s experiment?
A
Hans Geiger helped him
B
It was like shooting a high powered rifle at tissue paper
C
It involved Gold
D
Alpha particles Bounced back
8) Where is the nucleus found?
A
At the center of the electron field
B
Orbiting the outside of the atom
C
Cheating on his girlfriend
D
Pluto
9) In a neutral atom
A
Number of electrons = number of protons
B
Number of neutrons = number of protons
C
Number of electrons = number of cheeseburgers
D
Number of electrons = number of neutrons
10) What is an Ion?
A
An atom with more/less electrons than protons.
B
An atom with more/less neutrons than protons.
C
An atom with more/less electrons than leptons.
D
An atom with more/less neutrons than protists.
11) Which element has 82 protons
A
Bismuth
B
Krypton
C
Bromine
D
Lead
12) An atom whose nucleus emits particles and changes is known as what?
A
a negative ion
B
a radioactive isotope
C
a halogen
D
a positive ion
13) The atomic number of an atom tells the number of __________.
A
the atomic mass of an atom
B
atoms in a reaction
C
electrons in an atom
D
protons in an atom
14) Carbon–13 and Carbon–14 are considered to be _____ because of the differing number of neutrons.
A
atoms
B
protons
C
elements
D
isotopes
*select an answer for all questions
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