5 Written questions
5 Matching questions
- Hydrogen Bonds
- Aqueous Solution
- Chemical Bonds
- a A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.
- b An attraction between two atoms resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms. The bonded atoms gain complete outer electron shells.
- c A type of weak chemical bond formed when the partially positive hydrogen atom participating in a polar covalent bond in one molecule is attracted to the partially negative atom participating in a polar covalent bond in another molecule (or in another region of the same molecule).
- d A chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solutions.
substance that minimize changes in pH.
- e A solution in which water is the solvent.
5 Multiple choice questions
- The smallest unit of matter that retains the properties of an element.
- The making and breaking of chemical bonds, leading to changes in the composition of matter.
- A strong chemical bond in which two atoms share one or more pairs of outer-shell electrons.
- An atom's central core, containing protons and neutrons.
- One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
5 True/False questions
Acid Precipitation → Rain, snow or fog that is more acidic than pH 5.2.
Solution → A liquid that is a homogeneous mixture of two or more substances.
Evaporative Cooling → occurs because the molecules with the greates energy leave.
Ocean Acidification → Rain, snow or fog that is more acidic than pH 5.2.
Cohesion → The sticking together of molecules of the same kind, often by hydrogen bonds.