Atomic Particles
Radioactive Decay
Parts of the Periodic Table
Using the Periodic Table
Models of the Atom
100
This atomic particle has a negative charge.
What is an electron?
100
The amount of time it takes for half of a sample of the element to decay.
What is half-life?
100
This is an element that has luster, is a good conductor of heat and electricity, is malleable, and is ductile.
What is a metal?
100
This is the first element on the periodic table.
What is hydrogen?
100
This man developed the idea of an atom.
Who was John Dalton?
200
This atomic particle has a positive charge.
What is proton?
200
Sample X has a half-life of 10 years. How much of a 20 g sample would be left after 20 years.
What is 5 g?
200
These elements are usually gases or brittle solids at room temperature and poor conductors of heat and electricity.
What is nonmetals?
200
This element is in period 6, group 11.
What is gold?
200
This man used a gold foil experiment to develop the idea of the nucleus.
Who was Rutherford?
300
This atomic particle has a neutral charge.
What is neutron?
300
Sample Y has a half-life of 20 years. This is how much of a 100 g sample would be left after 60 years.
What is 12.5 g?
300
These elements share some properties with metals and some with nonmetals.
What is metalloid?
300
This element has 82 protons.
What is lead?
300
This man developed the idea of electrons using a Crookes Tube saying they were in a soup of positive charge.
Who is Thomson?
400
These two atomic particles make up the mass number (atomic mass).
What is the protons and neutrons?
400
This is the percentage of the original sample that would be left after 2 half-lives have occurred.
What is 25%?
400
This is the only metals that is liquid at room temperature.
What is mercury?
400
The atomic mass of this element is 107.868.
What is silver?
400
This man came up with the idea that electrons are in orbitals around the nucleus.
Who was Bohr?
500
This atomic particle is not inside the nucleus.
What are electrons?
500
This is the half-life of carbon.
What is 5,730 years?
500
This is a synthetic element with the lowest number of protons.
What is promethium?
500
This is how synthetic elements are made.
What is particle accelerators?
500
This is our current model of the atom.
What is the electron cloud model?
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