Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Intro to Chemical Reactions

No description
by

Rachel Esquibel

on 30 November 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Intro to Chemical Reactions

Evolution of heat and light
Formation of a gas
Formation of a precipitate
Color change
Signs of a Chemical Reaction
PRODUCTS
REACTANTS
A+B  C+D
Chemical Equations
3CO2 
2Mg 
4MgO 
Describing Coefficients:
individual atom = “atom”
covalent substance = “molecule”
ionic substance = “unit”
Describing Equations
Objective:
I will describe what occurs in chemical reactions by writing chemical equations to show the relationship between the reactants and products.

Agenda:
Writing & Describing Chemical Equations
Class Activity - Practice

Chemcatalyst:
Construct a lewis structure of the following compounds:

MgCl2 and NH3
What is different in the construction of these two compounds? Why?

33. 11/10/14 Writing & Describing Chemical Reactions 59-60
Date Lecture/Lab/Activity Pg#
Table of Contents
atoms can only rearrange
total mass stays the same
36 g
32 g
4 g
4 H
2 O
4 H
2 O
mass is neither created nor destroyed in a chemical reaction
Law of Conservation of Mass
Zn(s) + 2HCl(aq)  ZnCl2(aq) + H2(g)
How many?
Of what?
In what state?
How many?
Of what?
In what state?
Two atoms of aluminum react with three units of aqueous copper(II) chloride to produce three atoms of copper and two units of aqueous aluminum chloride.
Writing Equations
Remember the diatomic elements.
In what state? - physical state
Of what? - chemical formula
How many? - coefficient
2H2(g) + O2(g)  2H2O(g)
Identification of elements/compounds involved in the reaction
Use symbols to show:
Writing Equations
Writing & Describing Chemical Reactions
Practice Activity
matter can only be transformed
matter can be lost as heat/gas
Describing from the equation
For each of the following reactions, write a chemical equation to match the given description. Be sure to address: How many? Of what? In what state?

1. Two atoms of lithium react with two molecules of liquid water to produce two units of aqueous lithium hydroxide and one molecule of hydrogen gas.
2. When heated, a unit of solid calcium carbonate yields a unit of solid calcium oxide and a molecule of carbon dioxide gas.

For each of the following reactions, write a description of the given chemical equation. Be sure to address: How many? Of what? In what state?

3. 2Na(s) + Cl2(g) --> 2NaCl(s)
4. 2Fe(s) + 2H2O(l) + O2(g) --> 2Fe(OH)2(s)
5. Draw a diagram representing the reaction in #4. Differentiate between elements using labels or different colors. How does this diagram demonstrate the law of conservation of mass?
Full transcript