Science Flashcards
These are called the building blocks of matter.
Atoms
What is the most widely accepted model of the atom?
Niels Bohr’s planetary model.
What are the three main types of elements?
Metals, Metalloids, and Non-Metals.
How many valence electrons is the maximum amount an element can have?
8
How do you determine the number of valence electrons an element can have?
The number of valence electrons of an element can be seen by counting the group number of the element in the periodic table from left to right. (Excluding transition metals)
(Also except helium, which has 2 valence electrons.)
The atomic number of an element is the same amount as the number of protons and electrons it has. (Unless it’s an ion) True or False?
True
These are the electrons on the outermost energy level of an atom.
Valence Electrons
Atoms gain, lose, and share electrons to gain 8 valence electrons. What rule is this?
The Octet Rule
Non-metals lose valence electrons. True or False?
False. They usually gain/receive electrons.
Metals lose/give valence electrons. True or False?
True
What do atoms become when they give/receive electrons?
Ions
What is a pawsitively charged ion?
Cation
What is a negatively charged ion?
Anion
In giving valence electrons, the one with the least amount will give to the one with more, and the metal will give to the non-metal. True or False?
True
Who created the Lewis Dot Structure?
Gilbert Lewis