Key Vocabulary Matter and changes Mixtures Atoms Periodic Table PotpourriAcids and Bases States of Matter

These substances contain only 1 atom. Element 100

All matter is made of these. Atoms 100

This type of matter consists of 2 or more substances NOT chemically combined. Mixture. 100

This part of the atom has a positive charge. Proton 100

The modern Periodic Table shows these, arranged in increasing atomic number. Elements 100

This is the study of the properties of matter and how matter changes. Chemistry 100

These would have a pH value of 0-7. Acids 100

The combination of 2 or more atoms. Molecules 200

Burning wood is an example of this kind of change. Chemical 200

This type of mixture can be separated by gravity. Suspension 200

These are found in the nucleus of the atom. Protons and neutrons 200

Each element is represented by this (either one or two letters). Symbol 200

The atomic weight is a combination of these Protons and neutrons 200

Soap and detergents are examples of these. Bases 200

2 or more elements chemically combined in a specific ratio. Compound 300

The amount of matter does not change in a chemical reaction. This is the law of conservation of this. Matter 300

These variables would make it easier for sugar to dissolve in water at room temperature. Crushed sugar cube and stirring the water. 300

These parts of the atom move around the nucleus. Electrons. 300

Water is not found on the Periodic Table of Elements because water is this. Compound 300

This part of an atom has a negative charge. Electron 300

This has a pH of 7. Distilled water 300

Pure matter that is always the same in composition. Substance 400

Cutting a piece of wood into smaller pieces is this type of change. Physical 400

When you add so much solute that no more dissolves, you have this. Saturated solution 400

The atomic number is the same as these 2 parts of the atom. Electrons and protons 400

This is the elements that are in the same horizontal row in the Periodic table. Period 400

A shorter, easier way to show a chemical reaction using symbols. Chemical equation. 400

Acids turn litmus paper this color. Red. 400

The three states of matter. Solid, liquid and gas 100

This state of matter has both a definite volume and definite shape. Solid 200

In this state of matter, particles spread apart and fill all the space available. Gas 300

Water changes from this state to this state when it is boiled. Liquid to a gas 400