Download presentation

Presentation is loading. Please wait.

Published byJaden Carter Modified over 4 years ago

1
IIIIIIIVV II. Balancing Equations (p. 285-288) Ch. 9 – Chemical Reactions

2
A. Balancing Steps 1.Write the unbalanced equation. 2.Count atoms on each side. 3.Add coefficients to make #s equal. Coefficient subscript = # of atoms 4.Reduce coefficients to lowest possible ratio, if necessary. 5.Double check atom balance!!!

3
B. Helpful Tips n Balance one element at a time. n Update ALL atom counts after adding a coefficient. n If an element appears more than once per side, balance it last. n Balance polyatomic ions as single units. 1 SO 4 instead of 1 S and 4 O

4
1 210 412 428 Why is there a 2 after the oxygen? __________________ What are all the diatomic elements? _________________ Oxygen is diatomic Br, I, N, Cl, H, O, F

5
Reactants Products Yields SubscriptCoefficient

6
Counting Atoms 1) H 3 PO 4 2) 3NaOH 3) 2K 2 C 2 H 3 O 2 4) Mg 3 (PO 4 ) 2

7
More Counting Atoms 1) 3Al(NO 3 ) 3 2) 3Al 2 (SO 4 ) 3 3) 2Ca(OH) 2 4) 3NH 4 NO 3

8
Balanced or not? n H 2 + O 2 H 2 O n CH 4 + O 2 CO 2 + H 2 O n Mg + O 2 MgO

9
How to Balance n All the atoms on the reactants side must equal all the atoms on the products side n First, you need to count all the atoms H 2 + O 2 H 2 O H O 2 2 2 1

10
How to Balance n Are they equal? n Add coefficients to change the number of atoms H 2 + O 2 H 2 O H O 2 2 2 1 2 4 2 2 4 Balanced!! Good job Balanced!! Good job

11
C. Balancing Example Aluminum and copper(II) chloride react to form copper and aluminum chloride.

12
Practice… Sn +HF SnF 2 + H 2 Cu+ AgNO 3 Cu(NO 3 ) 2 +Ag

13
Now You Try! WO 3 +H 2 W +H 2 O Fe+O 2 Fe 2 O 3 SiO 2 +C SiC+CO

Similar presentations

Presentation is loading. Please wait....

OK

IIIIIIIVV Intro to Reactions Ch. 8 – Chemical Reactions.

IIIIIIIVV Intro to Reactions Ch. 8 – Chemical Reactions.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Ppt on two point perspective grid Ppt on summary writing example Ppt on computer languages Ppt on management of natural resources Ppt online form date Ppt on kpo and bpo Ppt on earth dam failure Ppt on self development definition Ppt on art and craft movement style Ppt on tinder at tinder