Building Blocks of Matter Science Grade 5 Chapter 1

Vocabulary Chapter 1 Element Physical property Chemical property Atom Atomic number Molecule Compound Solution

Element Basic kind of matter Pure Only one type of atoms Cannot be broken into smaller pieces by physical or chemical processes Is in the periodic table

Physical Properties A property of material A description You can see, touch, smell, hear You can measure it

Chemical Properties A property A result of contact with other materials (change or no change) Description of reaction

Atom Smallest particle of an element that has the same properties as the element Include protons and neutrons (nucleus) and electrons Elements are made of one type of atoms

Atomic Number Number of protons in a nucleus The number found above the elemental symbol in the periodic table Each element has a different atomic number Single most important information of an element

Molecule Smallest part of a substance that has the same properties as the substance Made from more than one atom Can be made from one type of atoms (elements) or more two or more types of elements (compounds)

Compound H2O Kind of matter Made of more than two types of atoms Not found in the periodic table Combination of elements H2O

Solution Mixture Can be separated Substances are spread out evenly Solute will not settle Water is a universal solvent

Vocabulary Chapter 1 Element Physical property Chemical property Atom Atomic number Molecule Compound Solution