Atoms
The positive particle in the nucleus.
A proton
A pure substance made of only one type of atom.
An element
What element is shown on the board?
Hydrogen
Salad, trail mix, muddy water, and soup are all examples of...
Mixtures
The nucleus
The neutral particle in an atom's nucleus.
A neutron
This is a column on the Periodic Table.
Group
What element is shown on the board?
Oxygen
This is a mixture where one substance has completely dissolved in another substance and you cannot see the particles any longer.
A solution
What compound is H20?
Water
The negative particle that zips in shells around the nucleus.
An electron
This is a row on the Periodic Table.
Period
How many atoms of each type of element are shown on the board?
1 calcium, 1 carbon, 3 oxygen
This is a mixture where you can see the particles in the substance.
A suspension
This is the smallest part of a compound.
A molecule
This is the smallest particle of an element that still retains properties of that element.
An atom
Why are two periods of the table pulled out and placed below the main table?
Compounds are held together with these...
Chemical bonds
What is a difference between a mixture and a compound?
A mixture is variable (changes) whereas a compound stays the same every time; mixtures are not chemically bonded and compounds are.
What do we call the letter on an element block of the Periodic Table?
A symbol
This is the number of protons contained in the atom of an element.
Atomic number
Name two ways elements are organized on the Periodic Table.
By their similar properties and by increasing mass.
Elements and compounds have this in common.
They are both pure substances, they have similar properties, and they are made of atoms.
What would you call the mixture drawn on the board (solution or suspension)? How do you know?
It's a suspension because all the particles settled to the bottom; they didn't dissolve.
How many atoms of each element are shown on the board?
9 carbon, 8 hydrogen, 4 oxygen