Slide 1AP Biology at Bensalem High School With Ms. Gallagher AP Biology at Bensalem High School With Ms. Gallagher Slide 2 A Little about Advanced Placement Courses are designed…

Slide 1FUEL CELLS The presentation that follows is meant to explain what was going on inside the fuel cell when the model car was running along the floor and the H 2 and…

Slide 1Balancing Chemical Equations Can’t Create or Lose Atoms A A B B A A B B A A B B 2A + 2B  AB Not Balanced You must have the same number of each type of atom on…

Slide 1 Slide 2 The Periodic Table Slide 3 John Newlands – 1864 – law of octaves Slide 4 The Periodic Table John Newlands – 1864 – law of octaves Dmitri Mendeleeve…

Slide 1 Slide 2 The Mole Concept Avogadro’s Number = 6.022 x 10 23 Slide 3 How do you measure how much? You can measure mass, or volume, or you can count pieces. We measure…

Slide 1 I.Chemistry History A.Early chemistry 1.Greek chemistry (~ 400 BC) a.Matter consists of four elements: fire, earth, air, water b.Atoms as indivisible particles proposed…

Slide 1 Notes Chemical Equations and Reactions Slide 2 Chemical Equation Reactants: original substances Products: new or resulting substances Chemical EquationChemical Equation:…

Slide 1 What is the chemical formula for water? Draw the structure of water. Write down all the types of bonding that you know of. Slide 2 What allows this drop of water…

Slide 1 zChapter 2: The Chemical Context of Life Slide 2 Chemical Context of Life zMatter (space & mass) zElement zCompound zThe atom zAtomic number (# of protons); mass…

Slide 1 Regents Chemistry Chemical Reactions: An Introduction Slide 2 Physical vs. Chemical Properties Substances are described by their physical and chemical properties…