Daily Science pg. 68• Name the following Covalent compounds

– SO2 OF2

– N2O CCl4– PCl5 N2O5

– P2O5 NH3

• Write the formula from the name– Iron (II) oxide Potassium Nitrate– Diphophorus pentoxide Boron trifluoride– Calcuim Chloride trinitrogen heptoxide

• Name the following ionic compounds:– CaCO3 Fe2O3

– KCl NiBr3

– FeSO4 AuCl3– LiBr NaI– MgCl2– FeCl3

Chemical Reactions

Foldable- pg. 67

Making a chemical reaction

• Obtain the following materials:– Soap, yeast, hydrogen peroxide, a plastic

bottle, funnel, and tub

• Mix the yeast with water and add a few drops of food coloring.

• Into the bottle, add the hydrogen peroxide (H2O2)

• Next, add the soap• Lastly, add the water and yeast mixture.

Stand back and observe.

Components of a Chemical Reaction• Reactants- shown on the right side

of the chemical equation• Reaction arrow- shows change

between reactants and products• Products- shown on left of chemical

equation

Reactants

• If the reactants require energy to break bonds, they are called endothermic

Products

• If bonds are created, energy is released creating an exothermic process

Catalysts

• Catalysts are used to speed up chemical processes.

• If a catalyst is used, it is written above the equation arrow.

Writing chemical equations

• Word equation:– Methane and oxygen yield carbon dioxide and

water

• Molecular model– + +

• Chemical equation– CH4 + 2O2 CO2 + 2H2O

Balancing Chemical Equations• The number of atoms of each

reactant = the number of atoms of each product.– Ex. CH4 + 2O2 CO2 + 2H2O

– Reactants: Products » C-1 C-1» H-4 H-4» O-4 O-4

practice

• Pg. 227