Balancing Consolidation

Agenda

• Warm up review

• Check homework

• Quiz

• HW: Equations I

On back of homework

• Explain the difference between formulas, equations and reactions.

Practice writing

test essay question!

Balancing homework

1) 1.3.2

2) 2.2.3

3) 2.1.2.1

4) 2.1.2

5) 2.1.2.1

6) 2.3.6.1

7) 1.2.1.2

8) 1.5.3.4

9) 2.25.16.18

10)1.3.1.3

11)4.5.2

12)2.2.2.1

13)2.4.1

14)1.12.8

15)6.6.1.6

16)2.1.2.1

17)2.1.1.1.1

Explain:

1. What tricked you or confused you?

2. Pick any number and explain, like you are tutoring a freshmen (great detail), how to balance that question.

Quiz Time

Popper Demo

• What do you think will happen?

VocabularyUsed to separate compounds

• + used to separate two reactants or two products

• means “yields” or “reacts to form”

Used to tell state of matter

• (s) signifies a solid

• (l) signifies a liquid

• (g) signifies a gas

• (aq) means aqueous, dissolved in water

• Use PT in classroom and solubility chart on back of your PT to determine state of matter.

Write as subscripts behind

chemical formula!

Tell state of matter

• Na

• Cl

• Hg

• NaCl

• Cu(NO3)2

• PbI2

Based on Solubility ChartBased on

PT

Used to designate catalyst

• indicated that heat is supplied to the reaction

• X indicates the substance above arrow was used as a catalyst –

– a substance that speeds up a reaction without undergoing any net change itself.

Things to Remember

• The diatomics (H2, N2, O2, F2, Cl2, Br2, I2)

• Shape of a 7 on column 7

• Energy is required to break bonds

Zinc metal reacts with aqueous lead (IV) nitrate to yield zinc nitrate solution and lead

Hydrogen gas reacts with nitrogen monoxide gas to produce water vapor

and nitrogen gas.

Aqueous calcium hydroxide reacts with phosphoric acid to precipitate calcium

phosphate and water

Ethanoic acid burns in oxygen to produce carbon dioxide gas and water vapor

Homework

• Complete the worksheet – Equations I

• No late work accepted for credit.