So that a closed system will stay the same after a chemical reaction
200
Fill in the blanks
_______ contain formulas with the " hydroxide" group.
Bases
300
Define the difference between a chemical & a physical property.
Chemical property describes the ability of a substance to react and form one or more new substances. physical property is the characteristics of a substance that you can observe and measure without changing the substance.
300
Write the formulas for the iconic compound
a.sodium chloride
b.calcium fluoride
c.Lithium fluiride
a. NaCl
b. CaF2
c. LiF
300
Name the following Molecular Compounds
a.CBr4
b.NO2
c.SiO4
d.OF2
a. Carbon Tetrabromine
b. Nitrogen dioxide
c. Silicon Tetraoxide
d. Oxygen diflouride
300
Is " Fe+O2=FeO" balanced?
show how
yes.
reactants= O=1, Fe=1
products= O=1, Fe=1
300
What does it mean to describe a solution as neutral?
The solution contains an acid that reacts with the base, to neutrailize the solution.
400
What are 3 clues of a chemical change?
- Colour change
-Heat or light is given off
-Bubbles of gas appear
-A precipitate is formed
-Difficult to reverse
400
When do Ionic bondings occur?
When a metal transfers one or more electrons to a
non-metal in an effort to attain stable electrons.
400
Fill in the blanks
molecular compounds are made up of ___________.
molecular compounds form when _________ are sharred between two non-metals.
- Non-metals
- Electrons
400
List the 3 forms that a chemical equation can be
written in.
Word, Skeleton,Balanced
400
List two differnt properties of Acids & Bases
Acids: Sour, Contain citric acid & acetric acids, conduct electricity, react with some metals
Bases- slippery, bitter, make soap, conduct electricity