44 Science Tutorials

These Science tutorials are written by experienced educators, all of whom also offer private tutoring lessons. Get the Science help you need, whether through these tutorials or through private tutoring lessons.

Mechanics Made Easy: Dimensional Analysis

In physics, a situation or formula can be evaluated by its dimensions (i.e. Length[L], Time[T], Mass[M], etc). Dimensional analysis, as it is called, checks to see if the dimensions of a formula are balanced on each side. This method of evaluation can be useful because it ensures both sides of an equation have matching units.…

Mechanics Made Easy: Newton’s Laws of Motion

Newton’s First Law of Motion reads “An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.” This is where we get the idea of inertia: an object’s tendency to keep on its current course…

Genetics: Non-Mendelian Traits

Genetics is the study of genes from one generation to the next. Gregor Mendel is the Father of Genetics, and his experiments with pea plants provided insight into how traits pass from parents to offspring. We now know that our chromosomes, which are made of DNA, work in pairs. That means that for any gene,…

Energy Loss Incurred when Charging a Capacitor in a RC Circuit

Among their many applications, capacitors are often used as short-term energy storage elements in electronic systems. When a capacitor charges in a simple series RC (resistor-capacitor) circuit, the energy stored in the capacitor increases as it charges and the resistor dissipates energy as the capacitor charging current passes through it. Series resistance is present in…

Genetics: Mendelian Traits

Genetics is the study of how traits appear in different generations. A trait can be any characteristic, as long as it is inherited. Hair color, eye color, and colorblindness are all genetic. Height is affected by genetics. Something like a tattoo is not inheritable and is not a genetic trait. Gregor Mendel, a monk living…

Bias? What bias?

In scientific experiments, scientists must be careful to eliminate bias from their studies. Bias is a preference for a result that may or may not be accurate. It may be intentional or unintentional. It can appear in the design of an experiment, the selection of a sample, the recording of the data, the analysis of…

Genetics: Sex-Linked Traits

In the study of genetics, one mode of non-Mendelian inheritance is sex-linked. This occurs when the gene or genes in question are on the X chromosome (and sometimes on the y chromosome). Remember, we humans have 46 chromosomes existing in pairs. The 23rd pair are sex chromosomes. In general, women have XX, and men have…

Easy Understanding About Theories Of Acids & Bases

An acid always reacts with a base. There are 3 theories of Acids and Bases: 1. Arrhenius Theory is related to hydrogen ions,H+ as acid and hydroxide ions,OH-as base. 2. Bronsted-Lowry Theory is related to proton,H+,donor as acid and any proton acceptor as a base like OH-, H2O,Cl-,NH3,etc. 3.Lewis Acid-Base Theory is related electron pair…

How To Achieve 100% Success?

WAYS TO ACHIEVE 100% SUCCESS! BE DETERMINED IN YOUR GOAL!  • Create aspiration and enthusiasm to study. .• Expert teacher in school will create interest in student’s mind in a subject. Let him plan for that before taking class. • Expert tutor will help students for home assignment and increase depth of knowledge in the…

Easy Ways Of Identifying Oxidation-Reduction Reactions

In an oxidation reaction, the change in charge will increase. Example: Iron turns to Fe(II) ion Fe→ Fe(2+)+ 2e Only Reducing agent will undergo oxidation. In a Reduction reaction a reactant will decrease in charge. Example: Fe(2+)+ 2e → Fe Fe(II) ion turns to Fe atom. Only Oxidizing agent will undergo reduction. NOTE:Both oxidation occurs…

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