Fire Safety

Energy In Chemical Rxns

• ALL CHEMICAL RXNS NEED ENERGY TO GET STARTED= Activation energy

• Exothermic- Releases energy (feels warmer to touch)

– Melting an ice cube

• Endothermic- Absorbs energy (feels cooler to the touch)

– Freezing an ice cube

Things that effect the rate of a Rxn

• Concentration

• Temperature

• Surface Area

– More SA=increased Rxn rate

• Presence of a catalyst-Speeds up Rxn

• Presence of inhibitors-Slow down Rxn

MicellTypes of

RxnsBondsFormulasEquations

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Balance me

Balance Me

Balance Me

Balance Me

__Na + __Cl2 __NaCl

Balance Me

__Fe + __O2 __Fe2O3

What formula would I have

if I combined Sodium with

Chlorine?

What formula would I have

if I combined Lithium and

Nitrogen?

What formula would I have

if I combined Nitrogen and

Hydrogen?

What formula would I have

if I combined Magnesium

and Bromine?

What formula would I have

if I combined Hydrogen

with Oxygen?

What bond is seen in

Hydrogen bonding with

itself to form H2?

What type of bond is

present in NaCl?

This type of bond results

in the sharing of electrons.

This type of bond is what

allows metals to be

excellent conductors.

This type of bond results

in the uneven sharing of

electrons.

Identify the Rxn Below

Identify the rxn Below

Identify the rxn below

Identify the rxn below.

Identify the rxn below.

Show me the Lewis Dot

Structure for Hydrogen.

Would the Lewis Dot

Structure for Lithium be

the same as Magnesium?

Why/why not?

Identify the family that

contains a full outer

electron shell.

What type of bonds are

seen in polyatomic ions?

Calculate the atomic

weight of hydrogen

peroxide. H2O2