SECTION A Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and…
CHAPTER 2 ATOMS, MOLECULES, AND IONS Development of the Atomic Theory 18. Law of conservation of mass: mass is neither created nor destroyed. The total mass before a chemical…
Slide 1Do now! Have a look through your test! Slide 2 Moles! Slide 3 Equal masses of different elements will contain different numbers of atoms (as atoms of different elements…
Slide 1"When I play with my cat, who knows whether she is not amusing herself with me more than I with her." Michel Eyquem De Montaigne Michel Eyquem De Montaigne…
1. UPSEE–PAST PAPERCHEMISTRY- UNSOLVED PAPER - 2003 2. SECTION – I (Total Marks :50) Single Correct Answer Type There are five parts in this question. Four choices…
Slide 1Calculations What you need to know: Relative formula mass Empirical formula % composition by mass Use balanced equations to calculate masses of reactants and products…
Slide 1 STOICHIOMETRY Study of the amount of substances consumed and produced in a chemical reaction. Slide 2 The Mole and Stoichiometry 1. The Mole a. SI unit for a given…
Slide 1 Entry task: Feb 13 th -14 th Block #2 NOT AN ENTRY TASK! Agenda: Sign off on Post Lab question- Discuss Notes on Molecular Formulas and Hydrates HW: Molecular formula…
Slide 1 Molecular Formulas Section 11.4 Slide 2 Caffeine Caffeine is known medically as trimethylxanthine, and the chemical formula is C 8 H 10 N 4 O 2 It’s important to…