Atoms
What is an atom
What is the smallest particle that can still be considered an element.
When was the Borh's Model Found?
When was 1913.
What are isotopes?
what are atoms with the same number of protons and different number of nuetrons.
How many elements are on the periodic table.
What are 118 elements.
True or false Copper is the best conductor of electricity than any other metal?
What is false. Silver is the best conductor of electricity.
Does the center of an atom have a positive or negative charge?
What is positive charge.
What kind of model is it?
What is a Planetary model.
Give 2 examples of an isotope?
What are carbon 12, and Carbon 14.
What is the most common element in the universe?
What is Hydrogen.
How many metals are in the transition metal group?
What is 38 metals in the transition metals.
Who developed the atomic theory?
Who is John Dalton.
Is it still valid?
What is no.
What are some uses of isotopes?
What is biology, geology, health, nutrition, medicine, drug testing.
What is the most radioactive element?
What is polonium.
How many metals are on the periodic table?
What is 91 metals.
What is the nucleus surrounded by?
What is a "Cloud" of negative charge.
Why is the Model important?
What explains to us that electrons or negative charges orbit around the atom's nucleus in energy levels.
True or False all non-natural or man-made elements are radioactive isotopes?
What is True.
Name all of the elements in the noble gas family?
What are Helium, Neon, Argon, Krypton, Xenon, and Radon.
What is the most expensive metal?
What is Rhodium.
When did the idea of atoms begin to develop again?
When was the 1600's.
Why did it fail?
What is synchronton radiation.
What 2 elements have the most isotopes, and how many?
What are the 2 elements with the most isotopes are cesium and xenon with 36 known isotopes.
True or False elements found on Earth and Mars are exactly the same?
What is true.
What is the most radioactive metal?
What is polonium.