Vocabulary
What is the smallest part of an element
Atom
Horizontal rows on the periodic table are called____________.
Periods
What is the overall charge of the nucleus?
Positive
How many protons are in carbon?
6
What's in the center of an atom?
Nucleus
A negative ion
Anion
Vertical columns on the periodic table are called __________.
Families or groups
How do you find the number of protons?
Atomic number
______ and ______ is the same as the atomic number in a neutral atom.
Protons, electrons
What particles surrounds the nucleus?
Electrons
A substance made up of only one kind of atom is...
Element
How many periods are on a periodic table?
7
Protons and neutrons
How do you find the number of neutrons?
Atomic mass - atomic #
How many electrons can go in the 4th shell?
32
Atoms with a different number of neutrons is a...
Isotope
How many groups are on a periodic table?
18
What do protons and neutrons make?
Quarks
If the atomic number of Mercury is 80 and the atomic mass is 201, how many protons are in the nucleus?
80
What happens when you add a proton?
How does a radioactive isotope become stable?
Radioactive decay
What do elements in the same group have in common?
Similar properties
What surrounds the nucleus?
Electron cloud.
What is the mass number of an atoms of Sulfur that has 18 neutrons and 17 as the atomic number
25
What are valence electrons?
Electrons on the outermost shell