1 There’s a Quiz in Lecture Monday!!!. 2 What about this quiz?? Need to know your lab section Through page 95 Should bring a calculator and a pen Think.

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Presentation transcript:

1 There’s a Quiz in Lecture Monday!!!

2 What about this quiz?? Need to know your lab section Through page 95 Should bring a calculator and a pen Think

3 Quiz Know Table 1.5 on page 14 –Be able to convert back and forth –500 cm = ? m – 500m = ? cm Know about intensive (do not depend on amount) and extensive properties (depend on quantity)

4 Quiz Know about the atom – how many protons, neutrons, electrons in 37 Cl Know meaning of: –Homogeneous mixtures (= solutions) –Heterogeneous mixtures –Physical change vs chemical change –Isotope

5 Know the different experiments: Cathode ray tube / oil drop / gold foil / study of  and  particles: –Who did them –What they showed

6 Quiz Understand density In your calculations, keep track of your units!

7 Name Game Know the names and formula of common compounds. Especially study pages Given the symbol, know the name of the common elements ( first 36, alkali metals, alkaline earth metals, halogens, noble gases) Given the name, know the symbol

8 Atom Atomic number = number of protons = number of electrons ( for element) Atomic mass + sum of number of protons + number of neutrons Isotopes vary in number of neutrons 81 Br has a mass of 81; atomic number = 35; therefore 35 protons, 35 electrons; 46 neutrons

9 Other Items Know how to balance equations Be able to calculate weight % of an element in a compound Be able to convert between mass and moles and mass and number of molecules, number of atoms –18 g of water has how many atoms?