Displacement Reactions
In a displacement reaction, an ion (or atom) in a compound is replaced by an ion (or atom) of another element. We can use this general scheme for a visual representation of displacement reactions: There are a few … Read more
General Chemistry
How To Find The Amount of Excess Reactant
When two substances are reacted in a nonstoichiometric ratio, one of the is going to be the limiting reactant (LR), and the other is the excess reactant. The limiting reactant is the one that runs out first, and therefore, defines … Read more
Predicting The Products of Chemical Reactions
Although there are some common patterns to determine the product(s) of a reaction, the exact outcome depends on the type of the reaction. So, let’s discuss the process for the main types of reactions that you are going to see … Read more
States of Matter: Solid, Liquid, Gas, and Plasma
Matter exists in three main physical states: solid, liquid, and gas. Now, first in simple words: what is a solid, liquid, and a gas. On a visual level, we can identify them based on their shape and how they occupy … Read more
Heterogeneous and Homogeneous Mixtures
Let’s explain what mixture is in simple words without going into formal language. A mixture is something that is made by mixing two or more different things. Mixtures are everywhere we look. For example, you are sitting on the beach … Read more
Pure Substances, Mixtures, Elements, and Compounds
Let’s explain what mixture is in simple words without going into formal language. A mixture is something that is made by mixing two or more different things. Mixtures are everywhere we look. For example, you are sitting on the beach … Read more
Significant Figures Practice Problems
In the previous two posts, we discussed the meaning of significant figures, counting them in a number, and the rules of using them in addition, subtraction, multiplication, and division. These are the main ideas you need to remember when working … Read more
Significant Figures in Addition, Subtraction Multiplication and Division
In the previous post, we talked about significant figures, the ways of counting them, and their importance in the certainty of measurements. Significant figures of a measured number also dictate the certainty of the answer obtained by mathematical operations such … Read more
Significant Figures
Significant figures are important in measurements and calculations, and you are going to see them quite often in chemistry. If you have already seen them, there is a chance that you feel slightly lost on getting the point of using … Read more