Chemical Reactions Intro to Reactions.

Slides:



Advertisements
Similar presentations
IIIIIIIVV I.Intro to Reactions (p. 282 – 285) Ch. 9 – Chemical Reactions.
Advertisements

IIIIIIIVV I.Intro to Reactions Chemical Reactions.
IIIIIIIVV I.Intro to Reactions Ch.7– Chemical Reactions.
Intro to Reactions (p. 241 – 250)
IIIIIIIVV I.Intro to Reactions Chemical Reactions.
IIIIIIIVV I.Intro to Reactions Chemical Reactions.
Chemical Reactions.
IIIIIIIVV I.Intro to Reactions Chemical Reactions.
IIIIIIIVV I.Intro to Reactions Ch. 8 – Chemical Reactions.
Chemical Reactions Law of Conservation of Mass Balancing Chemical Equations.
IIIIIIIVV Intro to Reactions Chemical Reactions. Signs of a Chemical Reaction n Evolution of heat and light n Formation of a gas n Formation of a precipitate.
IIIIIIIVV I.Intro to Reactions Unit 7 – Chemical Reactions.
Chemical Reactions.  Chemical reactions involve changes in matter— the making of new materials with new properties accompanied by energy changes.  Chemical.
IIIIIIIVV If the 4 young ladies in the front row have a combined weight of 2.15x10 11 micrograms. What is the average weight of each? Convert their weight.
IIIIIIIVV I.Intro to Reactions Ch. 8 – Chemical Reactions.
IIIIIIIVV Intro to Reactions Unit 3 Stoichiometry.
IIIIIIIVV I.Intro to Reactions Ch. 9 – Chemical Reactions.
Balancing Chemical Equations
Introduction to Reactions
Turn in Section 11.1 to your class tray.
Ch. 8 – Chemical Reactions
Balancing Chemical Equations
Describing Chemical Reactions
Investigate and Identify the Law of Conservation of Mass – I8C
Aim: How to write chemical equations?
Ch. 8 – Chemical Reactions
Ch. 10 – Chemical Reactions
Intro to Reactions Ch 11 honors Ch 8 cp chem
Ch. 11 – Chemical Reactions
UNIT 7-CHEMICAL REACTIONS:
Intro to Reactions (p. 241 – 250)
Chemical Equations.
Intro to Reactions Topic #18
Intro to Reactions (p ) Ch. 8 – Chemical Reactions Intro to Reactions (p )
Writing Chemical Equations
Ch. 8 – Chemical Reactions
I. Chemical Changes in Matter (p ) Chemical Reaction
Chemical Equations.
Ch. 9 Chemical Reactions and Equations
Chemical Reactions.
Balancing Chemical Reactions
Unit 7: Chemical Reactions: Conservation of Mass
Intro to Reactions (p. 241 – 250)
Ch. 8 – Chemical Reactions
Law of Conservation of Mass:
Chemical Reactions.
Significance of Chemical Equations
FORMING NEW SUBSTANCES
Balancing and writing equations
FORMING NEW SUBSTANCES
Balancing Chemical Equations
Ch – Chemical Reactions
FORMING NEW SUBSTANCES
Ch. 7 - Chemical Reactions
Intro to Reactions (p. 241 – 250)
Chemical Equations.
Chemical Reactions Intro to Reactions C. Johannesson.
Chemical Equations.
Topic: Chemical Reactions
Ch. 9 Chemical Reactions and Equations
Chemical Equations and Reactions
Intro to Reactions (p. 241 – 250)
I. Chemical Changes in Matter (p ) Chemical Reaction
Intro to Reactions (p. 241 – 250)
Ch. 8 Chemical Equations and Reactions
Unit 7: Chemical Reactions: Conservation of Mass
Chemical Reactions Intro to Reactions.
FORMING NEW SUBSTANCES
Balancing Chemical Equations
Chemical Reactions.
Presentation transcript:

Chemical Reactions Intro to Reactions

A.Signs of a Chemical Reaction 1. 2. 3. 4.

B.Law of Conservation of Mass mass is neither created nor destroyed in a chemical reaction total mass stays the same atoms can only rearrange 4 H 2 O 4 H 2 O 36 g 4 g 32 g

C. Chemical Equations A+B  C+D REACTANTS PRODUCTS

C. Chemical Equations

2H2(g) + O2(g)  2H2O(g) D. Writing Equations Identify the substances involved. Use symbols to show: How many? - coefficient Of what? - chemical formula In what state? - physical state Remember the diatomic elements.

D. Writing Equations 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. How many? Of what? In what state?

E. Describing Equations Describing Coefficients: individual atom = “atom” covalent substance = “molecule” ionic substance = “unit”

E. Describing Equations Zn(s) + 2HCl(aq)  ZnCl2(aq) + H2(g) How many? Of what? In what state? One atom of solid zinc reacts with two molecules of aqueous hydrochloric acid to produce one unit of aqueous zinc chloride and one molecule of hydrogen gas.