Match the term with its description. (4 points) 1. Ions 2. Base 3. Acid 4. pH a. A compound that increases hydrogen ions (H+) when it is dissolved in a solution b. A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution c. An atom or molecule that has a positive or negative charge d. A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

An infection of the pulp and the surrounding tissue in the mouth is called

Which part of the microscope controls the amount of light which shines through the lens?