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WorksheetsReview Classifying Matter, Neutrons & Isotopes Radioactivity
Total questions: 10
Worksheet time: 7mins
Which element has the least number of protons?
Calcium (Atomic Number 20)
Bromine (Atomic Number 35)
Chlorine (Atomic Number 17)
Neon (Atomic number 10)
Which of the following would be classified as a homogeneous mixture?
Milk
Aluminum
Concrete
Oxygen Gas
What is a compound?
Substance that contains two or more types of colors.
substance that contains two or more types of mixtures.
substance that contains two or more types of states.
Substance that contains two or more types of elements.
Which of the following is the best definition of the Bohr Model?
There is a "sea of electrons" that are free to move
The electrons stay in place attached to individual protons
The electrons leave the atom to make positive ions
the electrons travel around the nucleus in a circular orbit
What part of the atom has a positive charge?
proton
neutron
electron
Which of the following can be classified as an element?
Calcium (Ca)
NaCl (table salt)
H2O (water)
milk
What is the Mass Number of Carbon that has 6 protons, 8 neutrons and 6 electrons?
6
12
14
20
How can you tell that an atom has gone through Alpha Decay?
Its atomic number decreased by 1
Its atomic number decreased by 2
Its atomic number increased by 1
Its atomic number increased by 2
Which of the following types of radioactive decay releases the most energy?
Alpha Decay
Beta Decay
Gamma Decay
Electron Decay
Which of the following elements would be the product of radioactive Beta decay of Protactinium (Atomic Number 91)?
Actinium (Atomic Number 89)
Thorium (Atomic Number 90)
Protactinium (Atomic Number 91)
Uranium (Atomic Number 92)
