Transcript What`s the Matter? - MisterSyracuse.com

Name ________________________________________ Date ___________________ Period __________
WHAT’S THE MATTER?
Directions: We know that all the “stuff” in the world is made up of matter. You are, your desk is, this
paper is, marmosets are; everything is made of matter. In class, we have been discussing the basic units that
make up matter, viz. atoms and molecules. We know that bonds hold together atoms to make molecules, and
that still other bonds hold together molecules to make other substances. In the questions below, you will get
the chance to show off your knowledge of matter and the bits that make it up. Make sure you read all the
directions, and answer all of the questions. Have fun – it’s science!
0. What’s a good name for a pet squirrel?
1. What two types of subatomic particles are in the nucleus of an atom?
2. What subatomic particle is whizzing around the nucleus of an atom?
Questions 3-7: Use the periodic table at the back of your assignment notebook, the one in your textbook, or
locate one online to answer the following questions.
3. What is the name of the atom that has 51 protons in its nucleus?
4. How many protons does an atom of Hg (mercury) have in its nucleus?
5. It is rare for oxygen atoms to exist by themselves in nature. Instead, they are often found as a molecule
of oxygen, O2.
a. What is the atomic weight of this molecule of oxygen?
b. How many atoms are in three molecules of oxygen?
6. Ca (calcium) is often found in an ionized form. This means that it has either lost or gained electrons.
How many electrons would an atom of calcium have if it had a charge of +2?
7. What is your favourite atom on the periodic table? Why? What is its atomic mass? Remember, atomic
mass is always reported in atomic units, AU.
Tournez la Page, S.V.P.
8. In the space below, draw an atom of Ne (neon). Remember that the first electron shell can hold only two
electrons, at the second can hold only eight. Include all subatomic particles (protons, neutrons, and
electrons) in your drawing.
9. Ethane can be represented by the molecular formula C2H6. Draw the structural formula below. Each
carbon can form four covalent bonds. Remember that covalent bonds are represented by a straight line.
10. Below is the structural formula of the amino acid valine. Write its molecular formula, using subscripts.
H
H
N
H
C
H
OH
C
O