basic chemistry
The smallest unit of an element that still retains its properties
What is an atom
Matter that has a definite shape and volume
What is a solid
The scale used to measure acidity and alkalinity
What is the ph scale
A vhf iCal change that forms a new substance
What is a chemical reaction
Products designed to balance skin ph after cleansing
What are toners
The center of an atom containing protons and neutrons
What is the nucleus
Matter that has a definite volume but takes the shape of its container
What is a liquid
Substances with a ph below 7 are considered this
What is acidic?
when two or more atoms are joined together chemically, they create this
What is a molecule
These help maintain the skin’s protective barrier and ph
What is the acid mantle
Negatively charged particles that orbit the nucleus
What are electrons
Matter with no definite shape or volume
What is a gas
Substances with a ph above 7 are considered this
What is an alkaline (or basic)
When a substance gains oxygen, the substance is considered
What is oxidized
A product that breaks down oils and debris on the skin
What is a cleanser
The number of protons in the nucleus of an atom determines this:
What is the atomic number
A physical mixture of two or more substances
What is a mixture
The ph of pure water
What is 7
A combination of substances that are held together by physical rather than chemical ties
What is a physical mixture
Ingredients that help attract moisture to the skin
What are humectants
The smallest part of a compound that still retains the pro of that compound
What is a molecule
A mixture in which ingredients are evenly distributed
What is a solution
This skin condition can occur when the acid mantle is disrupted
What is skin irritation or imbalance
Substances that act as a bridge to allow oil and water to mix and emulsify
What are surfactants
Chemical exfoliants that dissolve dead skin cells
What are AHAs or BHA