OATMEAL TREATS Combine together the following ingredients: some butter a bunch of nuts some sugar a whole lot of oatmeal a little salt a little baking powder a lot of flour Mix well, heat up the oven, and bake for a long time What is wrong with this recipe? Are measurements important?

Système International d'Unités METRIC SYSTEM Developed in 1791 and is currently used almost everywhere in the world, except the US. Our scientists, hospitals, researchers, etc use this system. Système International d'Unités  International System of Units or SI 10 Based on the number

Prefixes, Numbers and Symbols 1000 100 10 0.1 How to remember the staircase? 0.01 0.001 King Henry Doesn’t Usually Drink Chocolate Milk

LENGTH is the distance between 2 points. The standard unit is the meter. 1m = 39.4 inches Measuring instrument is a meter stick Smaller objects are measured using the cm. 2.5cm =1 inch Measure instrument is a ruler 100cm = 1m Even smaller objects are measured using the mm. Long distances = km 1 km = .62 miles 1km = 1000m

Volume Standard unit is the liter = l or L. Small amounts = mL _______mL = 1 L LARGE amounts = kL The amount of space an object occupies. ________L = 1 kL How many kL is 3250L ? 3.250kl What instrument is used to find the volume of a liquid? graduated cylinder

Graduated cylinder When measuring liquid volume it is important to read the graduated cylinder correctly. Your eye should be level with the top of the liquid and you should read the bottom of the meniscus.

How may mL is showing in these graduated cylinders? a.) b.)

Volume of rectangular solids Width = 5cm Height = 4cm length 10cm Formula: V = length x width x height Find the volume of the box.

The amount of matter in an object. MASS: The amount of matter in an object. Instrument used to find mass: Triple beam or electronic balance Standard unit is the kilogram kg Common unit - the gram. A large paper clip masses about 1g. Extremely small items are massed using mg for the unit. 1 g = _____ mg. How many mg would = 1kg?

What is the mass on the balance?

Triple Beam Balance What is the mass?                                                                                           ______________________ http://genchem.rutgers.edu/bal3b2.html

Weight A measure of attraction between two objects due to gravity Standard unit = Newton (N) A 1kg object is pulled to Earth at a rate of 9.8 newtons, so the weight would = 9.8N. Weight = mass x 9.8 newtons (on Earth at sea level). Note gravitational pull would be less on a mountain than at sea level, because you are farther away from the center of Earth.

TIME the interval between two events Standard unit is second Common units are minutes and hours

the degree or intensity of heat present in a substance or object Temperature the degree or intensity of heat present in a substance or object The standard unit for temperature is the Kelvin. We use Celsius and Fahrenheit in everyday life.

DENSITY The amount of matter that occupies a space D = mass (g) volume (cm3) 48 g 2cm 3cm 4cm V= 2cm x 3cm x 4cm V= _______ D = 19.3 g/cm3 The density of water is 1.0g/cm3