Esthetics Chemistry Exam(bk 102.6/102.7)

Distilled water with a ph of 7 is considered

a solution that has more negative hydroxide ions than positive hydrogen ions ions is

when a substance gains an electron and oxygen is released, the process is called

what is created when amino acids join together in chains

what happens when an alkali is placed in water

In what pH range is hair, skin and nails

what ingredient is listed as the primary ingredient on many skin care products

which of the following is not an example of physical change

all matter that in now living or alive at one time, with carbon present, falls within the scientific division of

acids tend to taste

all the following statements regarding the pH scale are true EXCEPT

The atomic number of a particular element

what is the most common element in the universe

the scientific study of matter and chemical changes of matter is known as

what it the smallest complete unit of an element

when two molecules of the element oxygen have combined, it is called

on the pH scale numbers less than 7 indicate

what color does red litmus paper turn when placed in an alkali

basic substances that cannot be broken down into simpler substances are called

many products estheticians use are the result of chemically uniting two different elements, which is known as

Matter with definite weight and volume but no definite shape is called

the primary materials the body uses to construct and renew itself is

why is skin a solid

the chemical symbol for carbon is

Two or more atoms joined together by a chemical bond is an

a simple unit of a carbohydrate is called

why do unstable atoms seek other atoms with which they can share electrons

pH stands for

On the pH scale numbers greater then 7 indicate

a solid is defined as

water molecule have 2 hydrogen atoms and one

The term used to identify anything that occupies space and has weight is called

why is pure water considered a neutral substance

what kind of substance does Ph indicate the acidity or alkalinity of

what is a negatively charged ion called

what color does blue litmus paper turn when placed in an acid

atoms have 3 main parts: protons, nuetrons and

electrons have which type of electrical charge

which of the following conditions is an example of chemical change

atoms that are the same, form a