Chapter 1
A step by step procedure used to solve a problem or explain an event
What is the Scientific Method?
Matter can neither be created nor destroyed.
What is the Conservation of Matter?
Define Isotope
Two of the same element that contain different numbers of Nuetrons
Define the Rule of Zero Charge
When a metal and a nonmetal bond, the total charge of the compound must be zero.
What does the Octet Rule state?
When forming compounds atoms will gain, lose or share electrons so each atom gets 8 valence electrons.
What you would use in a lab if you are heating substances
What is a Hot Plate?
What does the Chemical symbol of Sr stand for?
Strontium
Why did the Atomic Model change over time?
Because of advances in technology and new hypotheses about the structure of atoms
Why are flame test useful?
They can determine the identity of an atom.
What is the exception to the Octet Rule?
Hydrogen, it wats 2 valence electrons.
Why is it necessary to wear appropriate clothing during labs?
To protect our skin/body tissue from chemicals and other hazards that might be harmful or dangerous.
What does the Molecular Formula of NaNO3 stand for?
Sodium Nitrate
Add the number of protons to the number of neutrons.
What trends do we notice on the periodic table about the number of valence electrons?
They increase as we move to the right.Groups/Families have the same number of Valence Electrons.
Can you determine the smell of a compound based off its Structural Formula? Explain.
Yes, by looking at the atoms and what they are bonding to, you can determine the functional group, which determines the smell of the compound.
What were early Alchemists trying to achieve?
They sought to make substances into gold, achieve eternal life, and weapons.
When looking at the Periodic Table, what trends in density do we notice as we move left to right?
As we go to the right, The density of the atoms increases.
List the parts of an atoms.
Protons, Neutrons, Electrons, the Shell, and the Nucleus
Why do Ions form.
They are trying to look like noble gases.
What is the importance of the Lewis Dot Structure?
It shows how the electrons are distributed when they bond with each other.
If piece of Aluminum has a Mass of 12g and a Density of 2 g/cm3 what is the Volume of the Aluminum
The Volume of the Aluminum is 6ml
What are the Group Names of Group 1A, 2A, 7A, and 8A?
1A= Alkali Metals
2A= Alkaline Earth Metals
7A= Halogens
8A=Noble Gases
If I have two Isotopes of Cl, which are
1) 3517Cl
2) 3717Cl
then what is the average atomic mass of Chlorine?
35.4894amu
What is the total charge of of MgS2? Does this follow the Rule of Zero Charge.
The charge of this Ion in -2. So no, it does not follow the Rule of Zero Charge
If the structural formula of C10H20O, has a functional group of O-H, and the structural formula resembles a circle what is the smell of this compound? Explain.
This compound would smell minty. Even though it is in the smell category of Alcohol, since it has a circular structure this would make it smell minty.