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Worksheetsatomic structure
Total questions: 21
Worksheet time: 34mins
Name
Class
Date
1.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
2.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
3.
What scientist is best known for his gold foil experiment?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
4.
Who is the first scientist to think that the atom was the smallest unit of matter?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
5.
What scientist first developed 5 rules for atomic theory, and helped kick start modern chemistry?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
6.
Bonus question: What element is this an atom of?
a)
nitrogen
b)
lithium
c)
beryllium
d)
carbon
7.
The three main subatomic particles are electrons, protons and ____________.
a)
photons
b)
neurons
c)
neutrons
d)
quarks
8.
What are the two main parts of the atom?
a)
nucleus and cytoplasm
b)
nucleus and electron cloud
c)
core and electron cloud
d)
protons and neutrons
9.
What is the standard unit of mass at the atomic level?
a)
centimeters
b)
millimeters
c)
amu
d)
milligrams
10.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
11.
What is the electrical charge of a proton?
a)
1+
b)
1-
c)
neutral
d)
2-
12.
Water is an element
a)
true
b)
false
13.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
14.
A homogeneous mixture has the same composition of particles throughout.
a)
True
b)
False
15.
Salt water is a mixture.
a)
True
b)
False
16.
An example of a homogeneous mixture would be:
a)
salad
b)
perfume
c)
pizza
d)
chex mix
17.
A heterogeneous mixture would be:
a)
gold
b)
chex mix
c)
chocolate milk
d)
water
18.
A mixture that does not look the same throughout:
a)
heterogeneous mixture
b)
homogeneous mixture
c)
the periodic table
d)
water
19.
You are eating a pizza. What type of mixture are you consuming?
a)
homogeneous
b)
heterogeneous
c)
pure substance
d)
The Periodic Table
20.
Flammability is an example of what property?
a)
Chemical property
b)
Physical property
21.
Chicken soup is an example of what kind of substance?
a)
homogenous
mixture
mixture
b)
solution
c)
heterogeneous
mixture
mixture
d)
compound
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