Atomic Number
Mass Number
Atomic Mass
Isotopes
Elements
100
Hydrogen is the most abundant element in the universe, and it contains this number of protons.
What is 1?
100
A phosphorus atom has 15 protons and 16 neutrons, giving it this mass number.
What is 31?
100
How do you calculate the atomic mass of an element?
What is add the # of protons with the # of neutrons?
100
What is a good definition for an isotope?
Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons.
100
Element names are frequently derived from these two languages.
What are Greek and Latin?
200
Carbon is found in all organic molecules, and an atom of carbon contains this many protons.
What is 6?
200
What is the mass number of this nucleus?
What is 7.
200
Carbon-12 (12) has an abundance of 98.9% and C-13 (13.003355 amu) has an abundance of 1.1%. The average atomic mass will be closest to this whole number.
What is 12?
200
This makes isotopes similar.
What is the number of protons?
200
This element, which is the second most abundant in the universe, is rare on Earth.
What is hydrogen?
300
You need oxygen to breathe. This is its atomic number.
What is 8?
300
What is mass number?
What is the number of protons and neutrons?
300
What is the atomic mass of hydrogen?
What is 1.00.
300
How many neutrons does carbon‐14 have?
What is 8 neutrons?
300
This element is essential to all living things and is present in all organic compounds.
What is carbon?
400
70% of air is nitrogen. Ionized nitrogen produces green and violet aurora colors. This is its atomic number.
What is 7?
400
An atom has mass number of 23 and atomic number of 11. How many protons, electrons, and neutrons are present in the atom?
What is 11 protons, 11 electrons, and 12 neutrons?
400
What is the atomic mass of oxygen?
What is 15.99.
400
How do the chemical properties of different isotopes of the same atom compare with one another?
They are identical.
400
This element makes up the majority of the Earth's atmosphere.
What is nitrogen?
500
Fluorine is the first halogen. Pure fluorine is a corrosive yellow gas. This is its atomic number.
What is 9?
500
The difference between the mass number and the atomic number gives the _______.
What is the number of neutrons?
500
What is the atomic mass of lithium?
What is 6.94?
500
What is the difference between K-39 and K-40?
K has 19 protons, so K39 should have 20 neutrons and K-40 should have 21 neutrons. Both have 19 electrons.
500
"It's brimstone. We must be getting close," says Shrek about the foul smell produced by this element.
What is sulfur?