NEW
Font size
S
M
L
XL
WorksheetsPOTA: L5-8 Review
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
What is the difference between a C12 atom and a C14 atom?
a)
C14 has 8 protons, C12 has 6.
b)
C14 has 8 electrons, C12 has 6.
c)
C14 has 8 neutrons, C12 has 6.
d)
There is no difference, they are both Carbon atoms.
2.
This graph demonstrates the _____________ of Carbon 14. Choose the best answer.
a)
decay rate
b)
half life
c)
radioactivity
d)
energy
3.
The three nuclei seen here demonstrate the process of...
a)
Radioactivity
b)
Gamma radiation
c)
Quantum leaping
d)
a compound
4.
The molecule seen here is an example of a...
a)
Compound
b)
Mixture
c)
Element
d)
Isotope
5.
After 17,190 years, what percentage of Carbon 14 atoms will remain in a dead object?
a)
100%
b)
75%
c)
50%
d)
13%
6.
The orbits of the electrons around a nucleus are also called?
a)
Energy levels and quantums
b)
Shells and circles
c)
Energy levels and photons
d)
Quantums and isotopes
7.
These building blocks would best be considered a...
a)
Homogenous mixture
b)
Compound
c)
Molecule
d)
Heterogenous mixture
8.
This image shows the __________ of hydrogen.
a)
Isotopes
b)
Compounds
c)
Alpha particles
d)
Gamma rays
9.
A Beta particle can be stopped by a piece of ___________.
a)
Skin
b)
Aluminum
c)
Paper
d)
Thick lead
10.
By measuring how much C-14 is left in a dead object, we can estimate how long ago that object ___________. Choose the BEST answer.
a)
Died
b)
Reacted
c)
Decayed
d)
formed with other elements
11.
The number of protons in an atom is the same as __________________.
a)
The atomic weight
b)
The atomic mass
c)
The atomic number
d)
It's radioactivity
12.
Mixing and dissolving solid sugar into a cup of hot tea creates a ________________.
a)
Alloy
b)
Heterogeneous mixture
c)
Solution
d)
Compound
13.
The compound seen here is ____________ bonded.
a)
Physically
b)
Mentally
c)
Magnetically
d)
Chemically
14.
The Shroud of Turin was ______________ by three different labs.
a)
Carbon dated
b)
radioactively assessed
15.
A Sodium atom has ______ protons.
a)
11
b)
10
c)
13
d)
as many as it wants
16.
The nucleus of an atom contains ________________.
a)
Protons and neutrons
b)
Protons and electrons
c)
Neutrons and electrons
d)
Neutrons and C-14
17.
To get the _________________ of an atom you simply round the ____________ to the nearest whole number.
a)
Atomic number, atomic weight
b)
Mass number, atomic weight
c)
Mass number, atomic number
d)
Atomic number,
18.
A __________________ is the smallest possible piece of a compound.
a)
atom
b)
proton
c)
electron
d)
molecule
19.
There are ______ naturally occurring elements.
a)
118
b)
93
c)
92
d)
We don't know
20.
An atom that has 8 electrons in its valence shell is __________________.
a)
Reactive
b)
Stable
c)
Unreactive
d)
boring
Reset
