Science & Chemistry is 1 of 13 topics on the Texas Class A Barber written exam — 27 of the 300 questions in FadeJunkie's Milady-sourced bank cover it. Below are 17 real Science & Chemistry questions with real answers.
What do the letters "pH" stand for?
Potential hydrogen.
What does a pH below 7 indicate?
An acidic solution.
What is iontophoresis?
The process that introduces water-soluble products into the skin using electric current.
Why is ultraviolet light sometimes called "cold light" or "actinic light"?
It's a standard alternate name for UV light in cosmetology chemistry.
What are compounds of hydrogen, a metal, and oxygen called?
Bases.
What are humectants?
Chemical compounds that attract and retain moisture from the atmosphere.
What is a positive electrode called?
An anode.
What is high frequency an example of?
An electric current modality.
What is protein made of?
Amino acids.
What is the flow of electricity along a conductor called?
An electric current.
What term applies to all living things, and things that were once alive?
Organic.
What is an adjustable resistor used to control current in a circuit called?
A rheostat.
What element must a substance contain to be studied in organic chemistry?
Carbon.
Which UV rays are used in germicidal irradiation to destroy microorganisms?
UVC rays.
What color LED light is used to help reduce acne and bacteria?
Blue.
What is an example of a physical change (not a chemical one)?
Ice melting into water — no new substance is formed.
What compound can exist in all three states of matter depending on temperature?
Water.
These 17 are a sample. The full FadeJunkie bank has 27 real Science & Chemistry questions (plus 27 matching flashcards) — try the Science & Chemistry practice quiz or flip through the Science & Chemistry flashcards for free. A one-time $15 lifetime pass unlocks full multi-topic study and the complete 300-question bank across all 13 tested topics.
Science & Chemistry is one of 13 topics tested on the Texas barber written exam. See the Texas Barber State Board Exam Guide for the full exam process, or browse every topic from the Education Hub.
Questions and answers are drawn from the Milady Standard Barbering curriculum, the same textbook Texas barber schools use to prepare students for the TDLR/PSI state board exam.