Online Chemistry Tutor
Get Started With An Online Chemistry Tutor
Our certified online tutors are ready to assist you with your homework or preparing for your next big Chemistry exam. To get started, simply create an account and schedule a tutor for the day and time you need them. It's as simple as that to get a quality certified online tutor for all your Chemistry tutoring needs. Not to mention your first Chemistry session is Free! We offer a risk free trial session (No Credit Card Required). To get started today, follow the 3 steps below:
Step 1:
Create an account: It takes less than a minute and gives you full access to our tutoring services. Just click on the tab on your left which says, "Sign Up Now".
Step 2:
Schedule your Chemistry Session: After your account is set up, you can book your session. Simply click on the scheduler tab and select "Chemistry Tutoring", and a time and a date that works for you to meet your Chemistry tutor online.
Step 3:
Connect to your Online Chemistry Tutor: Once your Chemistry session is booked, email notification is sent along with a follow up call from a friendly Tutorzilla representative. The call is short, and only necessary to make sure you can join your session correctly.
It's simple, fast, and convenient. Our tutors are available 24/7, so we are flexible to your schedule. Don't put off Chemistry Tutoring any longer, sign up TODAY!
Overview of General Chemistry
The word "chemistry" comes from an Egyptian word meaning earth. Perhaps this is because chemistry examines the structure, composition, and properties of all matter. In your studies of chemistry, you will also examine the changes that matter undergoes through a chemical reaction. Your chemistry tutoring session studies can include: Atoms and their subatomic components; elements; compounds and chemical substances; and energy and entropy. Why is studying chemistry important? You will find that chemistry is often referred to as "the central science", because it connects the other natural sciences, such as astronomy, physics, material science, biology, and geology. If you don't know your chemistry, it's hard to really wrap your head around the other sciences! And no matter what science class you're in, we have all levels of science tutoring available for you 24/7.
Atoms & Subatomic Particles
Meet your new chemistry friend, "the atom". An atom is "the smallest indivisible particle of matter", which still characterizes a chemical element. Don't worry about the element yet, because we'll get there. Just try and visualize what an atom is. An atom is made up of three subatomic particles: positively-charged protons, electrically-neutral neutrons, and negatively-charged electrons. An atom is comprised of a dense nucleus of protons and neutrons, which is surrounded by a much larger cloud of electrons.
Elements
A chemical element is a type of atom. When you have atoms with the same number of protons, they are atoms of the same chemical element. The number of protons in an atom is called the atomic number, and this number is important on the periodic table. Elements are grouped by atomic number on the periodic table, and the table is a common presentation of all known chemical elements.
Now those subatomic particles can get a little squirrely and vary in number. If the number of neutrons varies in a single element, this determines the isotopes of that element. Electrons that are furthest from the nucleus are most easily transferred, and when atoms have either a deficit or surplus of electrons, they are called "ions". If an atom has an equal number of protons and electrons, it is electrically neutral. Having trouble getting these atoms, subatomic particles, and elements to play well with each other in your mind? We have a great Chemistry tutor who can help you understand the players and get along with them!
Chemical Substances & Compounds
A chemical substance is any material with a definite chemical composition. If we talk about chemical substances, we need to talk about chemical compounds. Why? Because a chemical substance that is made up of a particular set of molecules or ions is a pure chemical compound. A chemical compound is made up of two or more elements combined into one substance, through a chemical reaction. So what does that have to do with real life? You drink a compound everyday. Water is a chemical compound, which has the same ratio of 2 parts hydrogen, 1 part oxygen whether you get it from your faucet or chemists make it in a laboratory. Chemical substances and compounds exist as solids, liquids, or gases, and may change form with temperature or pressure changes. Water may exist as a raindrops under one temperature, but turn to sleet or ice if the temperature drops low enough. When we have a pure chemical compound, this is a substance that cannot be separated into other substances by a process that does not involve any chemical reaction. We can't separate the hydrogen and oxygen in water without a chemical reaction process to split the atoms.
So how do we describe compounds? Chemists describe compounds using formula in various formats. For molecules, the formula for the molecular unit is shown, such as H2O for water. For polymeric materials, such as minerals and many metal oxides, the empirical formula is written, like NaCl for sodium chloride or salt. So who comes first when we write a formula? The order of the elements in molecular and empirical formulas is C, then H and then we go in alphabetical order. So if we wanted to write the formula for glucose, which has 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms, it would be written like this: C6H12O6. Clear as mud? Good, let's move on!
Energy & Entropy
The ideas around energy and entropy will be important in almost all your chemical studies, so make friends with them right now! The energy and entropy concepts you will explore in chemistry will be focused mainly on those in relation to the spontaneity of chemical processes.
So what is a spontaneous chemical process? A spontaneous process is "a physical or chemical change that occurs without the addition of energy." Because spontaneous does not refer to the speed of the process, the process may be fast or it may be slow. Ok, so we don't add or take away energy from the environment to push a spontaneous chemical process, but this is where entropy comes in. Entropy is central to the second law of thermodynamics, which deals with physical processes and whether they occur spontaneously. If we do have a spontaneous chemical or physical change in an isolated system, this process occurs with an increase in entropy. Why do spontaneous changes happen? Well, they tend to smooth out differences in temperature, pressure, density, and chemical potential that may exist in a system, and entropy is then a measure of how far this smoothing-out process has progressed. Entropy is express as a function of a quantity of heat, the quantity of heat which shows the possibility of conversion of that heat into work.
Are you having a little trouble making friends with energy and entropy? What about chemical substances and compounds? If you don't understand it on the first go-round, DON'T WORRY! Many people need a little extra chemistry homework help, and we have great Chemistry tutoring which can help clear up any confusion you have.
Once you have chemistry down pat, you can spread your mental wings and fly ahead to get an online physics tutor!
