Vocabulary
This is the name for the horizontal row in the periodic table.
Period
Hydrogen belongs in this group
1 A
Which of the following elements is a transition metal?
Calcium iron sodium sulfur
iron
This is what happens when two atoms share one or more pairs of electrons with each other.
A covalent bond is formed.
The least massive particle in an atom is the
electron
Any substance that has a definite composition.
A chemical
Uranium is found in this block.
f
This is where all the alkali metal elements are found on the periodic table.
Group 1
A single covalent bond involves the sharing of
two electrons
This is how protons are bound together
strong nuclear forces
A blend of any two or more kinds of matter, as long as each maintains its own unique properties.
Mixture
True or False
Radon is a transition metal.
False. It is a noble gas.
Which of the following elements is not a metal?
H K Na Fr
H Hydrogen
This type of electron is involved in the formation of a covalent bond.
valence electron
The number of valence electrons for Group 2 elements is
two
A statement that can be tested experimentally.
Hypothesis
On most periodic tables, this is where lanthanides and actinides appear.
What is below the main portion?
How would Barium be classified?
Alkaline earth metal
A charged group of covalently bonded atoms is known as a ______________ bond.
polyatomic
What is the mass of one mole of carbon-12 atoms?
12 grams
A generalization that explains a body of known facts or phenomena.
Theory
Which is a noble gas?
oxygen, neon, sodium, carbon, chlorine, niobium
Neon
True or False?
Metals are not good conductors of heat and electricity.
False.
Metals are good conductors of heat and electricity. They are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire).
An ionic bonds results from electrical attraction between _________ and _________.
What are cations and anions?
This is a substance, made of two or more atoms that are chemically bonded, that can be broken down into simpler, stable substances.
Compound