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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

The structure of a neutral Boron-10 atom.

What is 5 protons and 5 neutrons in the nucleus with 5 electrons in the electron cloud.

200
A block of lead has a density of 5.65 g/cubic centimeter 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

This causes cells to absorb water and explode.

What is a hypotonic solution

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 structure of a neutral Nitrogen-15 atom.

What is 7 protons and 8 neutrons in the nucleus with 7 electrons in the electron cloud.

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

Explain why soap kills the coronavirus.

The hydrophobic side chains physically break apart the virus due to similar intermolecular forces.