third period

compound

Definition: A compound is a substance formed when two or more chemical elements are chemically bonded together. Example: A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more then one element held together by chemical bonds.

mixture

Definition: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Example: The mixture that we picked is lemonade. Lemonade is a mixture because it is a mix of water, lemon juice, and sugar. The ingredients in lemonade appear to be mixed together but are not actually chemically mixed, just dissolved into each other.

element

Definition: Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Example: An element is made up of atoms that are combined and can not be broken into simpler substances.

solid

Definition: having an interior filled with matter Example: state of matter with a definite volume and shape.

compound

Definition: A compound is a substance formed when two or more chemical elements are chemically bonded together. Example: A compound is a combination of two or more elements that are chemically bonded. Water, H2O, (two hydrogen molecules and one oxygen molecule) is a compound. The two elements are bonded together to make something new-water.

compound

Definition: A compound is a substance formed when two or more chemical elements are chemically bonded together. Example: An example of a compound is Salt. It is sodium chloride, or NaCl. It is two different elements that are chemically bonded to make a new substance.

compound

Definition: A compound is a substance formed when two or more chemical elements are chemically bonded together. Example: an example is salt (NaCl).

mixture

Definition: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Example: A mixture has more than one substances and they each contribute their own properties into the mixture.

mixture

Definition: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Example: A mixture like cereal. The cereal can be separated from the milk. This means that it is a mixture.

mixture

Definition: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Example: a mixture is more than 2 things mixed together. example is chicken noodle soup.

substance

Definition: A substance is matter which has a specific composition and specific properties. Example: A substance is a form of matter having constant chemical composition. It can also be an element.

substance

Definition: A substance is matter which has a specific composition and specific properties. Example: An example of a substance is a crystal.

substance

Definition: A substance is matter which has a specific composition and specific properties. Example: An example of a substance is iron.

substance

Definition: A substance is matter which has a specific composition and specific properties. Example: Any form of matter that is uniform throughout and has consistent properties.

element

Definition: Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Example: An element is a pure substance made up of one kind of atom.

element

Definition: Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Example: An element is a pure thing that contains only one type of atom, they cannot be broken down further. An example of an element is aluminum, an example of aluminum is a sprite can.

element

Definition: Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Example: An example of a element is hydrogen.

element

Definition: Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions. Example: Elements are the simplest substance that cannot be broken down using chemical reactions.

Pure Substance

Definition: Pure substances are defined as substances that are made of only one type of atom or only one type of molecule Example: A Pure substance has only one type of atom and one type of molecule.

Pure Substance

Definition: Pure substances are defined as substances that are made of only one type of atom or only one type of molecule Example: A pure substance is H2O because it is the chemical symbol for water. The chemical formula never changes so water is considered a pure substance.

Pure Substance

Definition: Pure substances are defined as substances that are made of only one type of atom or only one type of molecule Example: A pure substance is a substance that can't be separated by physical means. They can be divided by into two groups.

Pure Substance

Definition: Pure substances are defined as substances that are made of only one type of atom or only one type of molecule Example: A pure substance is made up of only one kind of atom or molecule. It can be either an element or a compound.

Pure Substance

Definition: Pure substances are defined as substances that are made of only one type of atom or only one type of molecule Example: An example of a pure substance is gold.

crystal

Definition: a body that is formed by the solidification of a substance or mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces Example: A crystal is a solid that can come in different colors. It can have repeating patterns. Crystals can have smooth surfaces and/or jagged sides. Crystals can have complex atom structures making them some of the hardest substances on Earth-including the diamond.

crystal

Definition: a body that is formed by the solidification of a substance or mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces Example: A diamond is a great example of a crystal. The carbon atoms attach to four other carbon atoms making very strong bonds and a very strong structure.

crystal

Definition: a body that is formed by the solidification of a substance or mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces Example: A example of a crystal is everyday table salt. This is a example of a crystal because the elements compact together with each other to form salt.

crystal

Definition: a body that is formed by the solidification of a substance or mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces Example: A example of a crystal is salt and sugar.

solid

Definition: having an interior filled with matter Example: A example of a solid is a pencil.This is a solid because it is a defined shape.

solid

Definition: having an interior filled with matter Example: A solid is a firm and stable shape that is not a liquid or a fluid. They are one of the four states of matte. In solids molecules are closely packed together.

solid

Definition: having an interior filled with matter Example: A solid is one of the 4 molecules of matter. In solids molecules a packed closely together.

solid

Definition: having an interior filled with matter Example: An example of a solid is ice.

solid

Definition: having an interior filled with matter Example: solids are not small atoms they are like big chairs or a bed filled with matter. Your bed is filled with matter that means that you sleep on matter everyday

atom

Definition: the smallest particle of an element that can exist either alone or in combination Example: An atom is a tiny tiny tiny tiny tiny thing that you can not see. Everything is made up of atoms.

atom

Definition: the smallest particle of an element that can exist either alone or in combination Example: Atoms are small parts that are in everything. Atoms are the smallest constituent unit of ordinary matter that has properties of a chemical element. Everything is made up of atoms. Atoms are extremely small, they're only 100 picometers.

atom

Definition: the smallest particle of an element that can exist either alone or in combination Example: Atoms are the smallest particle of an element that can exist either alone or combined.

atom

Definition: the smallest particle of an element that can exist either alone or in combination Example: Atoms make up every thing. They are composed of particles called protons, electrons, and neutrons. Atoms can join together to form molecules.

molecule

Definition: the smallest portion of a substance that retains all the properties of the substance and is composed of one or more atoms Example: A molecule is a group of atoms bonded together to make the smallest building blocks. Molecules form together to make every living and non living thing on Earth.

molecule

Definition: the smallest portion of a substance that retains all the properties of the substance and is composed of one or more atoms Example: A molecule is made up of tiny atoms and can make things like water.

molecule

Definition: the smallest portion of a substance that retains all the properties of the substance and is composed of one or more atoms Example: An example of a molecule is an H2O molecule.

molecule

Definition: the smallest portion of a substance that retains all the properties of the substance and is composed of one or more atoms Example: Molecules are made up of atoms, they contain more than one atom. A molecule example could be CO2. Carbon Dioxide is a molecule of gas.

molecule

Definition: the smallest portion of a substance that retains all the properties of the substance and is composed of one or more atoms Example: the simplest unit of a chemical compound that can exist; formed when 2 or more atoms join together chemically