PMA 2 Review

Weak acids are acids that do not completely dissociate in solution, meaning they only partially ionize. Examples include vinegar and fruit juice.

A proton is a positively charged subatomic particle found in the nucleus of an atom. It determines the atomic number of an element.

A control group is a standard of comparison in an experiment. It is the group that does not receive the experimental treatment, allowing for a baseline to measure the effects of the variable.

A test variable, also known as an independent variable, is the factor that is changed or manipulated in an experiment to observe its effects.

A heterogeneous mixture is a mixture in which the components are not uniformly distributed, and different parts can be easily distinguished. An example is a salad.

An example of a strong acid is hydrochloric acid (HCl), which completely dissociates in water.

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.

A proton is positively charged, while a neutron has no charge. Both are found in the nucleus of an atom.

An example of a homogeneous mixture is saltwater, where the salt is completely dissolved and evenly distributed.

Dissociation in solution refers to the process where a compound breaks apart into its individual ions or molecules when dissolved in a solvent.