Download Salesian High School Elements and atoms Chemistry quiz The

Salesian High School
Elements and atoms
Chemistry quiz
1) The scientist who used alpha particles to bombard a thin film of gold, and proposed that most of
the volume of an atom is empty space because most of the alpha particles went straight through
the film:
a) Rutherford
b) Kelvin
c) Thomson
d) Dalton
2) Thomson discovered the electron when experimenting with
a) radioactive elements
b) alpha particles
c) thermometers
d) cathode ray tubes
3) The chemical properties of a particular element are largely determined by the number of
__________ an atom of that element possesses.
a) protons
b) neutrons
c) electrons
d) trolls
4) Several different types of chemical instruments make use of an excitation source known as a
deuterium lamp. Deuterium, H-2, has ____ neutron(s), whereas the most common isotope of
hydrogen, H-1, also known as protium, has _____ neutron(s).
a) 2 ; 1
b) 2 ; 0
c) 1 ; 0
d) 1 ; 2
5) The element selenium is interesting in that it is an essential element for human health and yet
toxic to both plants and animals at elevated levels. It is a ________, a member of the _________
period, and adjacent to another toxic element, ______.
a) metal, oxygen, chlorine
b) nonmetal, fourth, arsenic
c) metalloid, oxygen, phosphorus
d) nonmetal, oxygen, arsenic
6) The element that exists as a solid composed of diatomic molecules at room temperature and
pressure is
a) silicon
b) iodine
c) chlorine
d) bromine
7) Which of the following is one of the statements that make up Dalton’s atomic theory?
a) All atoms contain electrons.
b) All atoms of a given element are identical.
c) Atoms are divisible.
d) Atoms gain and lose electrons in chemical reactions
8) The symbol for the element potassium is:
a) P
b) Sn
c) K
d) Au
9) Whose experiment resulted in this person proposing a ‘plum pudding’ model for the atom?
a) Thomson; Kelvin
b) Democritus; Proust
c) Rutherford; Kelvin
d) Rutherford; Thomson
10) Isotopes are…..
a) Atoms that have the same mass number but different atomic number
b) Elements that have the same mass number but different atomic numbers
c) Atoms that have the same number of protons but a different number of neutrons
d) Elements that have the same number of neutrons but different mass numbers
Use the following table and options to answer the next set of questions
Particle
11)
Neutron
17)
a)
b)
c)
d)
Proton
Electron
0
Nucleus
Mass (a.m.u)
12)
14)
18)
Charge (relative)
-1
15)
19)
location
13)
16)
20)
a) +1
b) outside the nucleus
c) neutral
d) 1860
How many neutrons doe the following elements have
21) Silicon- 16
a)
b)
c)
d)
12
16
2
14
a)
b)
c)
d)
84
144
60
44
22) 144Nd
23) You discover a new element. How could you tell if it was a metal, non-metal, or metalloid?
a)
b)
c)
d)
If it conducts electricity then it is probably a metal
If it is shiny then it is probably a metalloid
If it sinks in water then it is a metal
If it is a liquid then it must be a non-metal
24) The columns on the periodic table are called
a)
b)
c)
d)
Periods
Families
Groups
Transitions
25) Carbon will react most similarly to
a)
b)
c)
d)
Boron
Nitrogen
Phosphorous
Lead
26) The two most common elemental forms of Carbon are
a)
b)
c)
d)
Diamond and graphite
Diamond and grapheme
Diamond and buckminster fullerene
Graphite and coal
27) Rutherford proved that atoms are mostly empty space because
a)
b)
c)
d)
Most of the alpha particles bounced back
Most of the alpha particles went right through the gold foil
The electrons bent towards the positive charge
Alpha particles are positive and heavy
28) John Dalton was wrong in his theory because
a)
b)
c)
d)
e)
Electrons go around the outside of the nucleus
Protons are positively charged
Isotopes exist
Neutrons have no charge
Elements can combine to form compounds
29) The law of conservation of matter says that
a)
b)
c)
d)
Protons and neutrons make up the mass number
Isotopes can have different mass numbers
No mass will be lost when reactions occur
Atoms combine in whole number ratios to make compounds
30) From the graph to the left;
when the atomic number is 80,
what is the highest number of
neutrons that a stable nuclei could
have?
a) 120
b) 140
c) 124
d) 130