JAHCHAI I. MILLER SCIENCE – MS. AZCONA DUE: Monday, April 16 th, 2012

Everything in this world make up matter, from telephones and water to birthday cakes and the air you breathe. Matter is anything that has mass. Everybody say… Happy Belated Bday Jahchai 4/14/12

Solid matter has molecules that can not move freely: Metal Cement Ice Diamond Camera

Physical Properties do not change the chemical nature of matter Density Solubility Conductivity Mass Volume Chemical Properties do change the chemical nature of matter Flammability Rusting reactivity Wood Acid water and hydrogen

A chemical change produces a new substance Examples of Chemical Changes burning wood dissolving salt in water mixing acid and base digesting food Roasting marshmellow’s A physical change does not produce a new substance A chemical change makes a substance that wasn't there before Examples of Physical Changes crumpling a sheet of paper melting an ice cube casting silver in a mold breaking a bottle Grating cheese The starting and ending materials of a physical change are the same, even though they may look different.

An atom is a tiny unit of matter that has 3 basic parts. A desk, the air, even you are made up of atoms! Large with +(pos) charge Large with no charge small with –(neg) charge Science

ELEMENTS An element is a pure substance that can not be broken down into any other element. Examples of elements: Iron (Fe) Gold (Au) Hydrogen (H) Carbon (C) Oxygen (O) Helium (He) Compounds Examples of compounds Water (H 2 O) Carbon dioxide (CO 2 ) Ammonia (NH 3 ) Methane (CH 4 ) Glucose (C 6 H 12 O 6 ) A compound is a substance made up of atoms representing more than one element

A periodic table shows elements organized by their atomic# and mass. It shows the elements name and symbol as well. 6 is the atomic number. C is the symbol of the element. Carbon is the name of the element is the atomic mass. Trends & Patterns AS YOU GO LEFT TO RIGHT ACROSS A PERIOD, THE RADIUS OF THE ATOM DECREASES AS YOU GO FROM TOP TO BOTTOM IN A GROUP, THE RADIUS OF THE ATOM INCREASES Trends of the periodic table shows patterns used to determine different physical and chemical properties of the elements. Example of a pattern

Substances and Mixtures Substances, such as sugar, have one type of particle in it. Mixtures, such as salt, have two type of particles in it. Heterogeneous & Homogeneous Mixtures Both mixtures consist of 2 or more components. But Heterogeneous Mixtures will dissolve and the Homogeneous Mixtures do not dissolve. Homogeneous Examples Salt and water Soap and water Juice mix and water Bleach and water Coffee and water Heterogeneous Examples Sand and water Orange juice with pulp Water with ice cubes Chicken noodle soup Oil & water

SOLUBILITY This is the amount of the solid that is dissolved into the liquid The Solute is the substance dissolved into the Solvent = solution solvent is the liquid solute is the solid Solute and Solvent Examples Salt and water (salt = solute/water = solvent) Powdered juice mix and water (Powdered juice mix = solute/water = solvent) Coffee and water (coffee = solute/water = solvent) Tea and Water (Coffee = solute/water = solvent) Sugar and water (sugar = solute/water = solvent)

PP – Clip art Wikipedia.com Chem4kids.com Google.com (images) Class notes