Chris Hasegawa, PhD

Retired Science Professor & Dean

Dr. Chris Hasegawa was a Science Professor and the Dean at California State University Monterey Bay. Dr. Hasegawa specializes in teaching complex scientific concepts to students. He holds a BS in Biochemistry, a Master’s in Education, and his teaching credential from The University of California, Davis. He earned his PhD in Curriculum and Instruction from The University of Oregon. Before becoming a professor, Dr. Hasegawa conducted biochemical research in Neuropharmacology at the National Institute of Health. He also taught physical and life sciences and served as a teacher and administrator at public schools in California, Oregon, and Arizona.

wikiHow's Editorial Process wikiHow partners with over 1000+ experts from a wide range of fields to ensure our content is accurate and based on well-established research and testimony. Content Managers conduct interviews and work closely with each expert to review information, answer reader questions, and add credible advice. Learn more about our editorial process and why millions of readers trust wikiHow.

Co-authored Articles (14)

How to

Calculate the Concentration of a Solution

In chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. The standard formula is C = m/V, where C is the concentration, m...

How to

Read pH Strips

If you’re interested in testing the alkalinity or acidity of a liquid, you can use pH strips to help you determine the pH level. If you’ve never used a pH strip, though, it might look like just a plain strip of paper...

How to

Calculate the Enthalpy of a Chemical Reaction

Use Hess’s law to quickly find the enthalpies of reactionsDuring any chemical reaction, heat can be either taken in from the environment or released out into it. The heat exchange between a chemical reaction and its en...

How to

Calculate Bond Order in Chemistry

On the atomic level, bond order is the number of bonded electron pairs between two atoms. In diatomic nitrogen (N≡N), for instance, the bond order is 3 because there are 3 chemical bonds linking the two nitrogen atoms....

How to

Raise the pH of Water

Water typically has a neutral pH around 7, but added minerals and chemicals can cause it to drop into acidic levels. Overly acidic water can change your body’s pH levels when ingested, harm fish in an aquarium, or caus...

How to

Adjust Water pH

pH measures the amount of acidity or base in a liquid. If you need to adjust the pH level of your water—whether for a science experiment, gardening, drinking water, a fish tank, or any other need—begin by measuring t...

How to Find the pH of a Solution (with Formula)

Learn to compute the pH level with a simple equationYou can calculate the pH of a chemical solution, or how acidic or basic it is, using the pH formula: pH = -log10. Anything less than 7 is acidic, and anything greater t...

How to

Study Muscle Anatomy

There are over 600 muscles in the human body, and memorizing them all can be really tough. However, it will be a lot more manageable if you break the task into chunks. In addition, learning the root words that make up th...

How to

Test pH

The pH level measures how acidic or alkaline a material is. Distilled water is neutral and measures 7.0 on the pH scale. Materials from 1-6 are acidic and materials from 8-14 are alkaline. If you'd like to find out for y...

How to

Dilute an Acid

Learn whether you add acid to water or water to acidPurchasing the most dilute acid that will meet you needs is recommended for safety and ease of use, but sometimes you will need to dilute it further at home. Do not ski...

How to

Prove That Light Travels in a Straight Path

Light is an essential part of your day. It allows you to see objects, shapes, and colors. In fact, the pupils in your eyes filter in light to help you see everything around you. As part of a school assignment, you may be...

How to

Distinguish Between Acids and Bases

In chemistry, the easiest way to distinguish acids and bases is to look at the substance's pH level—acids have a pH of less than 7 while bases have a pH greater than 7. But what if you don't happen to have any litmus p...

How to

Get Good Grades in Chemistry

Chemistry, like other math-heavy fields in the sciences, is a subject which requires hard work and effort to master. Chemistry entails equations, formulas, and diagrams; some of these may have to be memorized, while othe...

2 Easy Ways to Make Green Flames at Home

Explore the chemistry that causes regular fires to burn greenFires typically produce yellow and orange flames, but by adding different chemicals, you can turn the flames into an otherworldly shade of green. If you want t...