Objectives

​6.5 The student will investigate and understand that all matter is composed of atoms.
c) elements may be represented by chemical symbols;

d) two or more atoms interact to form new substances, which are held together by electrical forces (bonds);

e) compounds may be represented by chemical formulas;

Instructions

Have fun!

​Listen carefully.
Take notes if that is how you learn best. Answer the questions based on what you heard or read.

butterfly

sunflower

eyeglasses

catfish

eggplant

​NaCl is like the words you just saw.
It is made from combining Na and Cl to form a new word NaCl.

Na and Cl = NaCl
Sodium + Chlorine = Salt

Made of 2 or more elements that have been
chemically bonded to form a new substance(s).

COMPOUND

The purest type of matter. Made of only 1 kind of atom.

ELEMENT

ELEMENT VS COMPOUND

Made of 2 or more elements that have been
chemically bonded to form a new substance (s).

COMPOUND

Made of 2 or more atoms that have been chemically bonded together.

COMPOUND VS MOLECULE

Molecule

If it is an
element,
then it can
be found on this list.

If it is not on
this list, it is not an element.

There are no
exceptions.

Compounds
are made by
chemically
combining 2
or more of these elements.

Water is a compound made of 2 elements: O (oxygen) and H (hydrogen).

​2 hydrogen atoms and 1 oxygen atom

​Salt is a compound made from 1 atom of sodium and 1 atom of chlorine.

​2 elements: Na and Cl

1 element

2 atoms of
1 element

​The chemical bond takes place here with the electrons.