Show:
Atoms
Chemical Formulas
Periodic Table
Physical Properties
Grab Bag
100
What are the particles that "orbit" the nucleus of an atom?
Electrons
100
What is the chemical formula for water?
H2O
100
Who came up with the periodic table?
Dmitri Mendeleev
100
What are physical properties?
Physical properties are things can be observed about an object without changing the objects identity.
100
Give two characteristics of metals.
Various
200
What are the two particles found in the nucleus?
Protons and Neutrons
200
What is the difference between an atom and a molecule?
An atom is the single smallest part of the element while a molecule is made up of several atoms bonded together.
200
What two pieces of information given on the periodic table?
Any of the following: - Element Name - Element Symbol - Atomic Number - Atomic Mass
200
Give two physical properties of the desk you are sitting at currently.
Various
200
What are the three stages of matter?
Solid, liquid, and gas
300
If an atom has 3 protons and 2 electrons, does it have a positive or negative charge?
Positive
300
What is the procedure for naming a molecule?
The element symbols are written out and the number of that atom per molecule is written below it.
300
What are the three groups of elements on the periodic table?
Metals, Metalloids, and Nonmetals
300
What is density?
Density is the amount of mass packed into the space an object takes up.
300
How are the molecules arranged in a gas?
Free flowing, with no definite volume or shape
400
Who came up with the modern model of the atom?
Niels Bohr
400
Name the following element: H-H-H-O-O-C-C-O-O-H-H-H
C2O4H6
400
How are the elements arranged in the periodic table?
By atomic number
400
Which is denser: a bowling ball sized tennis ball or a tennis ball sized bowling ball?
tennis ball sized bowling ball
400
No Question - one free row point
No Question - one free row point
500
Draw an example of the atom - completely labeled.
See Drawing
500
Write out the following molecule: Na2CL2
Na-Cl-Cl-Na
500
What is the atomic number of hydrogen?
1
500
What is the difference between mass and weight?
Mass is the amount of matter an object has and weight is how hard gravity pulls on that mass.
500
What are metalloids?
Metalloids are elements in between metals and nonmetals that share some of the characteristics of both.