Elements
Atoms
Density
Moles
Miscellaneous
100
This element has the atomic symbol Rb.
What is Rubidium.
100
The charge of an electron is _______.
What is -1.
100
A cloud weights 3.60 g and has a volume of 1.45x10^(5)mL. It has a density of ________.
What is 2.48x10^(-5) g/mL.
100
There are __________ particles in one mole of substance. (Avogadro's #)
What is 6.022x10^(23).
100
A substance that has a definite volume but not definite shape is in the _______ phase.
What is liquid.
200
These two elements make up the compound known as table salt.
What is Sodium (Na) and Chlorine (Cl).
200

A regular atom of Fluorine would have ____ protons, ____ neutrons, and ____ electrons (3 answers)

What is 9 protons, 9 neutrons, and 9 electrons

200

A block of lead has a density of 5.65 g/cm3 and a volume of 0.126 L. This block has a mass of ________ (g)

What is 712 g.

200
There are ______ moles in 2.13 g of carbon.
What is 0.177 moles.
200
Chicken noodle soup is an example of a _________ mixture. (Homogeneous or heterogeneous).
What is heterogeneous.
300
This element is located in Group 4A and Period 3.
What is Silicon (Si).
300
In the Kinetic Molecular Theory, all matter consists of small particles in ________, ________ motion. (2 answers)
What is constant random.
300
A soda has a a density of 4.71 g/cubic centimeter and a mass of 1.84x10^(8)micrograms. The soda has a volume of ________(mL).
What is 39.1 mL.
300
There is a chunk of graphite(C) that weighs 5.67x10^(10) nanograms. There are _______ moles of Carbon in that chunk of graphite.
What is 4.72 moles.
300
215.15 K is ________ degrees C.
What is -58.00.
400
This element has a molar mass of 15.999 g/mol.
What is Oxygen (O).
400

The atomic mass of Be2 is...

What is 274.66 amu

400

After adding a baby into a tub that contained 12.0 L of water, the water now measures 14.6 L. The baby weighs 6.51 kg. The density of the baby is _______ (g/mL).

What is 2.50g/mL.

400
The volume of a piece of Copper is 5.28 mL. It has a density of 2.79 g/cubic centimeter. There are ___________ moles of copper present.
What is 0.232 moles.
400
Density, melting point, malleability, hardness, and color are all examples of _______ properties.
What is physical.
500
2 Parts! The elements Fluorine, Chlorine, Bromine, Iodine, and Astatine all belong to the ________ family (common name NOT Group #) and all have similar _________ properties.
What are Halogen and chemical.
500
The mass of one atom of Na is ____________(g).
What is 3.8177x10^(-23)g.
500

A sample in a weigh boat is weighed as 10.5 g. The weigh boat has a mass of 5.60 g. The sample is added to a beaker containing 0.021 L of water and it now reads 0.034 L. The sample has a density of ______ (g/mL).

What is 0.38 g/mL.

500
A mysterious substance is placed into a beaker with 5.37x10^(-8)Megaliters of water. The volume in the beaker now reads 6.65x10^(-8)Megaliters. The mysterious substance weighs 7.28x10^(13)picograms. Based on the densities given below, how many atoms are in sample of mysterious substance? Densities: Copper = 7.35 g/mL Iron = 8.92 g/mL Titanium = 5.69 g/mL Nickel = 3.54 g/mL
What is 9.16x10^(23) atoms.
500
Percent abundance of isotopes of a given element are calculated by dividing __________ by ______________ and then multiplying by 100. (several words for each blank)
What is 'The number of atoms for a given isotope' and ' The number of atoms for all isotopes'.
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