5 Written questions
5 Matching questions
- pH Scale
- Fourth shell of an atom can contain how many electrons?
- Second shell of an atom can contain how many electrons?
- a An ending material in a chemical reaction.
- b 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)
- c The amount of energy associated with the movement of atoms and molecules in a body of matter.
- d 8
- e 18
5 Multiple choice questions
- A solution in which water is the solvent.
- One of several atomic forms of an element, each with teh same number of protons but different number of neutrons.
- Two or more atoms held together by covalent bonds.
- A starting material in a chemical reaction.
- A covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electornegative atom, making it slightly negative and the other atom slightly positive.
5 True/False questions
Element → A subsctance that cannot be broken down to other substance by ordinary chemcial means.
Base → The smallest unit of matter that retains the properties of an element.
Electron Shells → An energy level representing the distance of an electron from the nucleus of an atom.
Third shell of an atom can contain how many electrons? → 2
Electron → A subatomic particle having no electrical charge, found in the nucleus of an atom.