Review
How many sig figs does 10.0350 have? 3 4 5 6 none of the above
Solve: 1.23 m x 0.89 m = ? 1.0947 m2 1.0 m2 1.09 m2 1.1 m2 none of the above
Solve: 3.12 g + 0.8 g + 1.033 g = ? 5.0 g 5 g 4.9 g 4.953 g none of the above
A piece of stone has a mass of 24.595 grams and a volume of 5.34 cm3. What is the density of the stone? (remember that density = m/V) 0.217 cm3/g 0.22 cm3/g 4.61 g/cm3 4.606 g/cm3
Convert the following measurement to scientific notation: 101,000 grams 1.01 x 105 g 1.0100 x 105 g 10.1 x 104 g 1.01000 x 105 g
 Posted on the board at the end of the block.
Homework

Standard(s)
 HSPS17.
 Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
 Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problemsolving techniques.
