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Atoms
Elements
Periodic Table
Measuring Matter
Potpour
100
The center of an atom
What is a nucleus?
100
How many atoms are needed to form an element?
An element is made of only one type of atom.
100
The atomic number tells this about an element
What is the number of protons?
100
The amount of matter in an object
What is mass?
100
What is matter?
Anything that takes up space and has mass.
200
These particles are found in the nucleus of an atom.
What are protons and neutrons?
200
How many elements naturally exist on the earth?
About 100.
200
What does the atomic mass tell about an element?
The sum of protons + neutrons
200
Milliliters or centimeters cubed are used when measuring this
What is volume?
200
Light, Sound, Heat
What is not matter?
300
The number of protons is always equal to
What are electrons?
300
Two or more elements chemically combine to form this.
What is a compound.
300
Magnesium has an atomic number of 12 and an atomic mass of 24. How many neutrons does Magnesium have?
12
300
This is the measurement of the amount of gravitational pull on an object.
What is weight?
300
An atom is made mostly of this
What is empty space?
400
These types of atoms have the same number of protons but different amounts of neutrons.
What is an isotope?
400
Isotopes of the same element always have the same number of these two things.
What are protons and electrons.
400
Helium has an atomic number of 2 and an atomic mass of 4. How many electrons does helium have in its outer shell?
2
400
Mass is measured in this unit of measurement.
What is a gram?
400
This two or more elements who have been physically combined
What is a mixture?
500
This is an atom which is charged due to the losing or gaining of electrons.
What is an ion?
500
What makes noble gases unique and keep them from forming compounds?
They are stable because their outer shells are filled.
500
Iron has an an atomic number of 26 and an atomic mass of 56. How many electrons does iron have in its outer most shell?
16
500
How can you find the density of matter?
divide the mass of the matter by its volume
500
Argonne which has an atomic number of 18 would have this many particles in its outer shell.
What is 8 electrons?