Hi, my name is Kayla Hamel. I am 18 years old and have been studying at Ahuntsic College for one year. I recently completed the Springboard to a DCS: Option Prerequisites program, and next session I will begin the Natural Science program. I created this glossary to help students who are entering or currently enrolled in the Natural Science program. The glossary includes 18 words related to Natural Science, each with a definition, an audio pronunciation, an example, and an image to help students better understand their meanings.
acid
noun
An acid is a substance that releases hydrogen ions (H+) when dissolved in water.
Example: This molecule is an acid.
fr: acide
acid anhydride
noun
An acid anhydride is a substance that reacts with water to form an acid.
Example: The reaction between an acid anhydride and water is often exothermic.
fr: anhydride d'acide
anion
noun
An anion is an atom or group of atoms that has gained one or more electrons, giving it a negative charge.
Example: Nitrate is an example of a polyatomic anion.
fr: anion
atom
noun
An atom is the basic building block of matter than cannot be divided into smaller parts using any chemical means.
Example: The atom contains protons.
fr: atome
atomic mass
noun
Atomic mass is the mass of a single atom.
Example: The periodic table lists the atomic mass of each element.
fr: masse atomique
atomic number
noun
The atomic number is the number of protons in the nucleus of an atom.
Example: The atomic number of oxygen is 8.
fr: numéro atomique
atomic weight
noun
The atomic weight tells how heavy an atom is on average.
Example: The atomic weight of oxygen is approximately 16.00.
fr: poids atomique
bacteria
noun
Bacteria are unicellular microorganisms with cell walls, but without organelles or an organized nucleus. Some can cause disease.
Example: Some bacteria can cause infections if they enter the body.
fr: bactéries
burette
noun
A burette is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations.
Example: I used a burette during my chemistry lab experiment.
fr: burette
calorimeter
noun
A calorimeter is a device for measuring heat released or absorbed in a reaction.
Example: The calorimeter helps determine the energy content of a substance.
fr: calorimètre
cation
noun
In chemistry, a cation is a positively charged ion that is attracted to the cathode in electrolysis.
Example: This atom will form a cation by losing an electron.
fr: cation
coagulation
noun
Coagulation is the process of blood clotting, when blood changes from a liquid to a thicker form.
Example: Coagulation helps stop bleeding when you get a cut.
fr: coagulation
combustion
noun
A combustion is a fast reaction between a substance and oxygen that produces heat and light.
Example: We observed the combustion of ethanol during the experiment.
fr: combustion
concentration
noun
A concentration is the amount of a substance in a certain volume of solution.
Example: The concentration of salt in the solution was very high.
fr: concentration
double bond
noun
A chemical bond in which two pairs of electrons are shared between two atoms.
Example: The molecule has a double bond between the two carbon atoms.
fr: liaison double
element
noun
An element is a basic substance that cannot be broken down into simpler substances.
Example: Oxygen is an important element.
fr: élément
Lewis structure
noun
It is a diagram representing the bonding between atoms in a molecule.
Example: The teacher asked us to do a Lewis structure.
fr: structure de Lewis
periodic table
noun
An arrangement of chemical elements based on the periodic law.
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