Sig Figs & Metric Conversions
How may significant figures are in the following number: 0.0000000004304
4 SF
What is the smallest unit of matter?
An Atom
What is the atomic number for Uranium?
92
How many moles is 5.63 grams of Zinc?
0.0861 moles
What is the correct name for P4O9?
Tetraphosphorous nonaoxide
How may significant figures are in the following number: 89362800000.
11 SF
What is the measure of energy?
Temperature
How many more protons does Tungsten have than Sodium?
Tungsten - 74 protons
Sodium - 11 protons
63 more protons
How many grams is 7.00 moles of gold?
1380 grams
1.38 x 10^3 grams
What is the correct name for Ni(PO4)?
Nickel (III) Phosphate
73.6 grams = ____ mg
73600 mg
Give two of the three states of matter and their characteristics.
Gas - Definite mass, no definite shape or volume
Liquid - Definite mass and volume, no definite shape
Solid - Definite mass, shape, and volume
35 Neutrons
How many grams are in 4.67 moles of Zn(SO4)?
754 grams
Give the correct formula for sodium borate.
Na3(BO4)
6.39 kg = _____ mg
6390000 mg
What is the difference between mass and weight?
Mass is the amount of matter in an object.
Weight is the amount of mass with the force of gravity.
What can you generalize about the atomic masses on the periodic table as the atomic number gets bigger?
Atomic masses increase as the atomic number increases
How many moles is 2348.01 grams of Na(NO3)?
27.6250 moles
What is the correct formula for decacarbon hexaflouride?
20. g/L
2.0 x 10^1 g/L
What is the difference between a covalent, ionic, and metallic bond?
Covalent - sharing electrons between 2 nonmetals
Ionic - transferring electrons between a metal and a nonmetal
Metallic - atoms flow between metal atoms
What are the three subatomic particles of an atom?
Where are they located and what is their charges?
Proton - Nucleus, positive
Electron - electron cloud, negative
Neutron - Nucleus, neutral
How many atoms is 7.39 grams of Copper?
7.00 x 10^22 atoms
What is the correct name for Cu2(CO3)?
Copper (II) Carbonate