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

LAB SAFETY Video - I Think School.com

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

You will find metals on the left side, non-metals on the right side, and metalloids in the middle.
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How To Calculate Density

Regular Objects: Length x Width x Height

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

Mass: Put your object on a triple beam balance, find the anwser, and there is your mass.

HOW TO FIND DENSITY: M/V (Mass divided by volume)


Physical Properties:

Mallability, Magnetize, Conductivity, Hardness, Streak, Luster, Color, and Crystal Structure.

MOST USEFUL: Hardness.

How To Test

Luster: Shine a light on it and see if it shines.

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

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Investigation Variable

A variable is something that can be changed. An example is a temperature. Problem:

The tampature inside is ____°F higher than outside