are the same as molecules

are made up of cells

are found in orbitals

contain more than one element

aren't found in nature

Cannot change the type of element

Requires an input of a second element to become a third element

Is measured in half-lives

Is measured in number of electrons

Doesn’t happen spontaneously

ionic bonds

protons

covalent bonds

molecular bonds

isotopes

ionic bonds

protons

covalent bonds

isotopes

nitrogen bonds

The slight negative charge of the hydrogen atoms

Shared electrons spending more time near the oxygen atom than near the hydrogen atoms

Shared electrons spending more time near the hydrogen atoms than near the oxygen atom

Boiling point

Two positive sides repelling each other

Adhesion of water molecules at the surface

Cohesion of water molecules below the surface

Cohesion of water molecules at the surface

Many water striders on the surface

High boiling point

Atoms are destroyed

Atoms are created

Atoms are neither created nor destroyed

There are no changes in the bonds between atoms

Atoms are rarely recombined

An example is glucose

Carbs are composed of carbon, nitrogen and oxygen atoms

Cellulose, a carb, is a raw material for ethanol

Carbs are used by plants and animals for storage of energy

Both a and c

the sun

volcanoes

trees

water

fire

When feed back into the system increase the rate of progress

Seen in the example of increased greenhouse gases leading to global warming

Seen in the example of world population growth

When a system responds to a change by returning it to its original state

Both b and d

Not found on earth

Found only in the oceans

Found in all deep caves

Found in the Pacific ocean

Both c and d