Vocab
Elements and atoms
Solutions
Energy
Water and pH
100

The ability to do work

What is Energy?

100

These are the simplest particles of an element.

What is an atom?

100

 The substance dissolved in the solvent

What is the solute?

100

The amount of energy needed to start a reaction.

What is activation energy?

100

Water usually has this pH

What is pH of 7?

200

 Atoms of an element that have different number of neutrons

What is an Isotope?

200

The region around the nucleus that indicates the location of the electrons

What are orbitals?

200

The substance in which the solute is dissolved.

What is a solvent?

200

Bonds formed when two atoms share electrons.

What are covalent bonds?

200

These are used to neutralize acids to form salts and water.

What are bases?

300

The force of gravity on an object.

What is weight?

300

Average atomic mass is the average of all of an elements what?

What is isotopes?

300

Solutions can be in what three states of matter?

What is solid, liquid, and gas?

300

 A protein or RNA molecule that speeds up metabolic reactions

What is an enzyme?

300

Chemical substances that neutralize small amounts of either an acid or a base added to a solution and are important for controlling pH of living things.

What are buffers?

400

 A compound having two different charges on opposite end

What is polar?

400

These two particles are found in the nucleus of an atom.

What is protons and neutrons?

400

Amount of solute dissolved in a fixed amount of solvent

What is a concentration?

400

These bonds form when one atom transfers electrons to another.

What are ionic bonds?

400

Another name for a basic substance.

What is alkaline?

500

Attractive forces that hold atoms together

What is a Chemical Bond?

500

This particle in an atom has a neutral charge.

What are neutrons?

500

What solutions are universally important to living things?

What are Aqueous Solutions?

500

These reactions always occur together.

What are redox reactions?

500

These bonds account for water’s unique properties.

What are hydrogen bonds?

600

Anything that occupies space and has mass.

What is matter?

600

These 4 elements makes up 90% of the mass of living things.

What are oxygen, carbon, hydrogen, and nitrogen?

600

A solution that no more salute can be dissolved into.

What is a saturated solution?

600

Reduces the amount of activation energy needed

What is a catalyst?

600

Ponds and Lakes freeze from the top down. This is does what for the water below it?

What is insulates the water?