Formulas & Equations
A notation indicating the elements in a compound and the ratios of the atoms of each element.
What is a Chemical formula?
A force of attraction between atoms or groups of atoms.
What is a Chemical bond?
A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared.
What is a Polar molecule?
This dissolves many substances because of its polarity. Also known as the, "Universal Solvent."
What is water?
The force of attraction between molecules of the same substance so that they tend to stay together.
What is cohesion?
Substances that undergo a chemical change.
What is a Reactant?
When two atoms share two pairs of electrons.
What is a double bond?
An atom or a group of atoms that has a positive or negative charge.
What is an Ion?
Bonds that form between molecules, not between atoms.
What are hydrogen bonds?
The force of attraction between molecules of different substances so that they tend to stick together.
What is Adhesion?
New substances formed as a result of a chemical change.
What is a Product?
When two atoms share three pairs of electrons.
What is a triple bond?
A useful model of the atom and an easy way to keep track of what happens to valence electrons.
What is an electron dot diagram?
Water molecules are closer together when water is in this form.
What is liquid form?
The concave curve in the upper surface of the water in a graduated cylinder.
What is a meniscus?
Writing the reactants and products as chemical formulas and a way that scientists summarize a chemical change.
What is a chemical equation?
A chemical bond in which two atoms share one or more pairs of valence electrons.
What is a Covalent bond?
When the pull on the electrons is equal from both sides, therefore cancelling each other out.
What is a nonpolar molecule?
This liquid participates in hydrogen bonding because it has an oxygen atom in its formula.
What is Isopropyl alcohol?
Cohesion between water molecules and adhesion between water molecules cause water to move up without help.
What is capillary action?
Numbers that appear before a formula in a chemical equation to show how many atoms or molecules of each reactant or product are involved in the reaction.
What are Coefficients?
An easy way to show covalent bonds where the bonds and positions of the atoms are shown.
What is a structural formula?
Having opposite charges within the same substance.
What is polarity?
Water does not dissolve in this liquid because this liquid is made up of nonpolar molecules.
What is gasoline?
Cohesion pulls the water molecules at the surface tightly together forming a skin-like boundary.
What is surface tension?