5 Written questions
5 Matching questions
- Radioactive Isotope
- a A liquid that is a homogeneous mixture of two or more substances.
- b A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.
- c A substance that is dissolved in a solution.
- d An isotope whose nucleus decays spontaneously, giving off particles and energy.
- e The amount of energy associated with the movement of atoms and molecules in a body of matter.
5 Multiple choice questions
- A scale we used to describe how acidic or basic a solution is. The scale ranges from 0-14, 0 being the most acidic and 14 being the most basic. 7 is neutral (pure water)
- The dissolving agent of a solution. Water is the most versatile solvent known.
- Measures the intensity of heat.
- A solution in which water is the solvent.
- Decreasing pH of ocean waters due to absoprtion of excess atmospheric CO2 from the burning of fossil fuels.
5 True/False questions
Element → A subsctance that cannot be broken down to other substance by ordinary chemcial means.
Acid → A substance that increases the hydrogen ion concentration in a solution. 0 on pH scale is a strong acid.
Hydrogen Bonds → 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).
Electronegativity → The attraction of a given atom for the electrons of a covalent bond.
Mass Number → The number of protons in each atom of a particular element.