SCIENTIFIC NOTATION
Write 0.00907 in scientific notation.
9.07 × 10⁻³
Convert 1250 m to km with correct sig figs.
1.25 km
What particle in an atom has a positive charge?
The proton
Name this compound: NaCl
sodium chloride
Write the formula for: Potassium iodide
KI
What is the place value of the 2 in 0.0927?
Thousandths place
Which conversion is NOT correct:
0.75 m = 7500 mm, 1.0 cm = 10 mm, 1.0 m = 100 cm, 1000 m = 1.0 km?
0.75 m = 7500 mm (this is incorrect)
How many zeros are significant in 0.004560?
3
Name this compound: SO2
sulfur dioxide
Write the formula for: Carbon dioxide
CO₂
Write 72,000 in scientific notation.
7.2 × 10⁴
Convert 4500 mL to liters.
4.50 L
Solve with correct sig figs:
(0.00456 + 0.00311)(8.20) ÷ 2.0
0.031
Name this compound: MgO
magnesium oxide
Write the formula for: Aluminium oxide
Al₂O₃
Write 0.00035 in scientific notation.
3.5 × 10⁻⁴
Round 305.2 m to the nearest whole meter.
305 m
How many significant figures are in the number 45.47?
4
Name this compound: CaCO3
calcium carbonate
Write the formula for: Ammonium nitrate
NH₄NO₃
Solve and express in scientific notation: (4.2×10⁻³)(1.0×10⁻¹)
4.2 × 10⁻⁴
Convert 0.00345 g to the correct prefix.
3.45 mg
Solve with correct significant figures:
(6.25×103)÷(2.5)
2.5×103
Name this compound: Fe2(SO4)3
iron(III) sulfate
Write the formula for: Copper(II) sulfate
CuSO₄