Chapt 7 part 1

Anything that occupies space and has mass(weight)

Hydrogen is the most common element found in the universe

Substances that release oxygen

What can exist in all three states of matter depending on its temperature

Gasoline, synthetic fabrics, plastics, and pesticides are what ?

Oxidation and reduction always occurs simultaneously and are referred to as

What is an example of oxygen in air

There are 118 different elements known to science w/ 98 of them occurring naturally on earth

Metals, minerals, water, air, and ammonia are?

Oxidation is a chemical reaction that what

What cannot be broken down into a simpler substance

Release of oxygen or the addition of hydrogen

example of chemical propertie

What oxidizes the melanin in hair

Atoms can be divided into simpler substances

Ice melting to water is a physical change?

What is an example of living things that contain carbon ?

Hair color changing is an example of ?

What are the basic building blocks of all matter and are the smallest element