Enter Category
is defined as anything that occupies space (volume) and has mass (weight)
matter
there are 118 different elements known to science today. how many of these are naturally occurring on earth
98
the basic building blocks of all matter
atoms
H
Hydrogen
o
oxygen
example of an elemental molecule is
atmospheric oxygen
as the basic unit of matter, ____cannot be divided into simpler substances by ordinary chemical means
atoms
rusting iron and burning wood are examples of a change in what type of properties
chemical
an example of physical change
ice melting to water
example of chemical change
oxidation of haircolor product
example of pure substance
salt
also known as alkalis are compunds of hydrogen, metal and oxygen
bases
is a stable, uniform mixture of two or more substances that is made by dissolving a solid, liquid, or gaseous substances in another substance
solution
which of the following allows oil and water to mix or emulsify by reducing surface tension
surfactant
example of a water-in-oil emulsion is
cold cream
are examples of emulsions used in beauty services
shampoos and conditioners
the tail of a surfactant molecule is _____or oil loving
lipophilic
nail polish, with glitter that can separate from the polish, is an example of
suspension
water-in-oil emulsions feel______than oil-in-water emulsions
greasier
is the ingredient used to raise the ph in hair products, so as to allow for the solution to penetrate the hair shaft
Ammonia
volatile organic compounds contain ____and evaporate very easily
carbons
is the chemical reaction that combines a substance with oxygen to produce an oxide
oxidation
the ph scale is
logarithmic
a ______charged ion is called an anion
negatively
what does a ph below 7 indicate
acidic solution