Vocabulary
Protons are
positive
What is the same as the atomic number?
Protons
What is on the left side of the periodic table?
Metals
What is shiny
Metal
Electrons are
Negative
How many protons are in Titanium?
22
Groups go
in columns (up and down)
What is a poor conductor
nonmetal
Properties that can be measured or observed when a change happens to change the make up is known as
Chemical property
How do you find the number of neutrons?
Subtract the atomic mass and protons.
Periods go
in rows (horizontal)
What is a semiconductor
metalloid
An electron that lives in the last electron shell is a
valence electron
What groups is iron in?
8
What is the in the middle?
Metalloids
What is a good conductor
metal
a measure of how ready a substance is to undergo a chemical reaction is known as
Reactivity
How many neutrons are in magnesium
12
What are the two most reactive groups?
Alkali metals (first row acceptable) and halogens
What is mostly gas at room temp?
nonmetal