A
B
C
D
E
100

The smallest unit of matter

Atom

100

The number of elements known to science today 

118

100

Any substance that occupies space and has mass

Matter

100

The substance that is dissolved in a solution 

Solute

100

This is used to measure the acidity & alkalinity of substances 

pH Scale

200

Two or more atoms joined together

Molecule

200

A stable mixture of two or more substances 

Solution

200

The number of elements that occur naturally on Earth

98

200

When immiscible liquids are combined, they form

Suspensions

200

A substance that releases oxygen

Oxidizing agent

300

O2 is this kind of molecule 

Elemental molecule 

300

things that should not be mixed or even stored near each other are

Incompatible 

300

The document used before the SDS

MSDS (material safety data sheet)

300

You must have this available for every chemical in the spa

SDS

300

Chemical reaction releasing heat

Exothermic reaction

400

Neutrons & Protons are found here

Nucleus

400

Most states and counties do not currently regulate this 

Disposal of chemicals

400

The number of categories in the SDS

16

400

Hydrogen peroxide should never be mixed with this

Bleach

400

All acids owe their chemical reactivity to this

Hydrogen ion

500

H2O is an example of this type of molecule 

Compound molecule 

500

Chemical reaction that absorbs heat

Endothermic reaction 

500

The effects of cosmetics and beauty products are based on this

How the body reacts to chemicals

500

The ability of iron to rust

Chemical properties

500

All liquids are either

Miscible or immiscible

M
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