5 Written questions
5 Matching questions
- a A subatomic particle with a single positive electrical charge, found in the nucleus of an atom.
- b One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
- c A substance that is dissolved in a solution.
- d a substance consisting of two or more different elements combined in a fixed ratio.
- e A subatomic particle with a single negative electrical charge. One or more electrons move around the nuclues of an atom.
5 Multiple choice questions
- A covalent bond in which electrons are shared equally between two atoms of similar electronegativity.
- A molecule containing polar covalent bonds and having an unequal distribution of charges.
- Decreasing pH of ocean waters due to absoprtion of excess atmospheric CO2 from the burning of fossil fuels.
- Two or more atoms held together by covalent bonds.
- A compound resulting from the formation of ionic bonds; also called an ionic compound.
5 True/False questions
Temperature → a substance consisting of two or more different elements combined in a fixed ratio.
Solution → A liquid that is a homogeneous mixture of two or more substances.
Matter → A substance that decreases the hydrogen ion concentration in a solution. 14 is a strong base on the pH scale.
Ionic Bond → A subatomic particle having no electrical charge, found in the nucleus of an atom.
Neutron → A subatomic particle having no electrical charge, found in the nucleus of an atom.