Atoms
What is an atom
The basic building block of all matter
Who is credited with creating the periodic table
Dmitri Mendeleev
How many elements are in the periodic table?
118
What element has the symbol O
Oxygen
What happens to atoms when they get hot?
They expand and have more energy.
What is in the center of the atom
The nucleus
What is an element key and where is it located
Located on the periodic table, it has listed the:
Atomic number
Atomic symbol
Element name
Atomic mass
What is an atomic number?
The amount of protons and electrons each element has and determines it's place on the periodic table.
What is the name of the element that has the symbol AG?
Silver
What happens to atoms when they become cold?
They constrict (want to be closer) and are not as active.
What is an electron?
A particle that orbits or circles around the nucleus of an atom.
What group is found on the far right side of the periodic table?
Noble Gases
What are the names of the two groups that sit in the "islands" of the periodic table?
Lanthanide and Actinides
Which element only has 1 electron?
Hydrogen
What type of attraction do gas molecules have for each other?
Very weak attraction, they move freely past each other with very little interaction.
What are the types of energy do the three
sub-atomic particles in an atom release?
Protons- positive energy
Neutrons- neutral energy
Electrons- negative energy
Where is the Period on the periodic table
It is the rows (left to right), numbered 1 through 7
What is a Group on the periodic table?
Groups are the columns (up and down)
What is a molecule?
Two or more atoms (elements) connected or bonded together.
Why do liquid molecules want to stay together (example is the water balloon)?
They are attracted to each other.
What is a valance electron
The last orbit (shell) of an atom
Elements that are in the same Period all the the same _____________?
Orbitals for its electrons
(
Elements in the Groups usually have the same _________?
Physical and chemical properties (They behave the same way).
What is the name of the group of elements that are 57-71?
Lanthanide
Explain why hot water mixed yellow and blue into green without it being stirred.
Hot water molecules increase in energy