Definitions
Grab Bag
Labs
Analyzing Molecules
Be able to explain in complete sentences:
100

one of the three basic particles inside atoms; located in the nucleus; possesses positive charge and has a mass very close to the mass of a neutron

Protons

100

a chemically bonded cluster of atoms; the smallest particle in compounds formed by covalent bonding between nonmetals including hydrogen

molecules

100

A compound is made up of at least two different _____

elements 

100

How many elements are in the following formula? 5H2O

name them

two

hydrogen & oxygen

100

list the basic information in each cell of the periodic table

chemical symbol, atomic number, element name, atomic mass

200

anything that has mass and takes up space (volume)

matter

200

how many naturally occurring elements are there?

94

200

When atoms share electrons, what kind of bond is that called? (think of the pipe cleaners and pony beads)

covalent

200

How many atoms are in the following formula?

B2(NO3)3

14

200
tell me about man-made elements 

They are called "synthetic". There are 25.

300

one of the three fundamental particles inside atoms; located in orbitals by energy around the nucleus; possesses negative charge

electrons

300

one of the three basic particles inside atoms; located in the nucleus; possesses no electric charge

neutron

300

What did the bumps on Legos represent?

the atomic number (or how many protons the element has)
300

How many elements are in the following formula?

Li2SO3

3

300

Draw an atom and label the following: atoms, protons, neutrons, nucleus, empty space

see drawing

400

the smallest part of an element, composed of a nucleus of protons and neutrons surrounded by a cloud of electrons located in orbitals according to their energies

atoms

400

two or more different elements chemically bonded together.

compounds

400

what part of an atom joins atoms together

electrons

400

when atoms give and take electrons, the bond is called 

ionic

400

why is Mendelev celebrated on the periodic table of elements?

He could tell by the patterns that God made what types of elements had not yet been discovered.