Group 1
What is an atom?
What particles surround the nucleus?
Electrons
electrons have .................... charge
Subatomic particles with no charge
neutrons
Protons have ................... charges
positive
What is a mixture?
group of elements and compounds that are not bonded together.
What is a compound?
two or more elements bonded together.
What is an element?
It contains one type of atom.
What are the vertical columns called?
Groups
What are the horizontal rows called?
periods
Which period is Sulfur in?
period 3
Which group is Beryllium in?
Group 2
How elements are arranged in the periodic table?
by the atomic number.
What does the atomic number represent?
protons
Which element is in group 3 period 2?
Boron
The noble gas in period 2 is called........
Neon
Elements in the same group share this.......
The number of electrons in the outer shell.
Most elements in the periodic table are..............
Metals
How many protons does Carbon have?
6 protons
True or False:
Hydrogen sits alone in the periodic table because it has one outer electron.
False.
What Group VIII elements are called?
Nobel gases
An element in group 7, period 3. What is the electronic structure of this element?
2,8,7
Why group VIII elements are unreactive?
Because they have a full outer shell electrons.
An element has this electronic structure (2,8,2). In which group and period the element is?
Group: 2
Period: 3
True or false:
Group 5 elements have 5 electron shells.
False.