LDA 1: Science Review
By: Chris Hobson
Science Safety Equipment
We use in sixth grade:
Fire Extinguisher | Eye Wash Station
Apron | Tongs
Safety Goggles | Fire Blanket
Eye Wash Station
The eye wash station is used if a chemical or other liquid gets into your eye. How to use:
Turn on the water and put your hurt eye(s) under the running water and wait for 20 - 30 min.
Fire Extinguisher
The fire extinguisher is used to put out fires.
How to use:
Point the hose at the base of the fire, pull the pin, keep aiming at the base of the fire, and DO NOT PANIC!
Fire Blanket
The fire blanket is used to put out small fires.
How to use:
Unfold the fire blanket and set over the whole fire. Do not let Oxygen get to it. Hold it there until the heat is gone, then fold it and put it back were it belongs.
Safety Goggles
Safety goggles are used to protect your eyes from anything harmful.
How to use:
Pull the back strap and put above your head, then lower it onto your face.
Tongs
Tongs are used to grab hot or chemical-like items.
How to use:
Grab ahold of the tongs, put it over the item you wish to grab, then squeeze the wooden or plastic part.
Apron
Aprons are used to cover your body, which can also be replaced by a lab coat.
How to use:
Pull the top strap over and onto your neck, then grab the two strings hanging at your side and tie them behind your back. You may need a buddy to do this.
Metals, Non-Metals, and Metalloids
The physical properties to classify metals, metalloids, and non-metals are:
Color, Shape, Texture, Feeling, Brittleness, Conductivity, Physical State, magnetivity, Weight, Density, Mallability, Hardness, and many more.
The BEST way to define it is, "Is it a solid?," also mallability, and usually they are shiny.
How To Test Metals
Luster: Shine a flashlight at the object and see if the light shines on of the object.
Conductivity: Set up a complete circuit, and add the object to it.
Mallebility: Test to see if you can make tie item into a wire(s).
Ductile: Try to bend your item.
Brittleness: How easy it is to break.
Magnetic: Use a magnet to see if it pulls/pushes item.
Where Metals, Non-Metals, and Metalloids Are Found On The Periodic Table
How To Calculate Density
Irregular Objects: Fill a beaker with more water than objects' space will take up, record it, then drop the object in, record the data again, then subtract them.
How To Find Mass
HOW TO FIND DENSITY: M/V (Mass divided by volume)
Minerals
Mallability, Magnetize, Conductivity, Hardness, Streak, Luster, Color, and Crystal Structure.
MOST USEFUL: Hardness.
How To Test
Streak: Rub the rock on the ground. (Some may have no streak, such as diamond)
Hardness: Use a variety of items to determine its hardness.
Color: Look at it to determine it's color
Investigation Variable
The tampature inside is ____°F higher than outside