Elements
Ag
Silver
A student puts baking soda and vinegar together in a jar. It gets cold and foams up. What evidences are there for a chemical change?
Production of a gas, and unexpected temperature change.
Fe
Metal
A marshmallow is placed on a stick then burned over a fire. Is there evidence for a physical or chemical change?
Chemical change.
Draw a picture of an elephant breakdancing in the Olympics.
Garcia decides
Re
Rhenium
A student cracks a plastic bracelet and the liquid inside begins to glow. What evidences are there for a chemical change?
Unexpected color change, unexpected temperature change.
This element is lustrous, semi-conductive of heat/electricity, brittle, and solid at room temperature. What type of element is it?
Metalloid.
Water evaporates from the ocean then, condenses in the air and falls as rain. Is there evidence for a physical or chemical change?
Physical change.
Why did the bicycle fall over?
Because it was "two tired." Double points!!
I
Iodine (Double points!!!)
A scientist places a solid into a liquid solution and it begins to melt. What evidences are there for a chemical change?
There is no evidence of a chemical change.
This element is a green gas at room temperature, it does not conduct electricity or heat, and is an insulator. What type of element is it?
Non metal
Cereal is placed in a bowl, the when milk is poured over it, the cereal dissolves in the milk. Is there evidence for a physical or chemical change?
Physical change. Double points!!
Each group chooses one person from each table to represent them. Send them to the board.
Rock, Paper, Scissors battle. Winning team takes half the other team's points.
Cl
Chlorine
A leaf falls from a tree and becomes orange and brown over time. What evidences are there for a chemical change?
Unexpected color change. Double Points!!
As
Metalloid (Double points)
A cleaning product is placed on a carpet. The cleaning product foams up and becomes hot. Is there evidence for a physical or chemical change?
Chemical change.
Draw a picture of a panda bear sledding down a hill and being chased by a rhino on a helicopter.
Garcia decides.
Am
Americium
Two clear liquids are mixed and a yellow/green solid is formed in the solution. What evidences are there for a chemical change?
Production of a precipitate, and unexpected color change.
Ca is a lustrous white metal that reacts with water. It is malleable, conducts electricity, and heat. What type of element is it?
Metal
A person eats and apple, the apple is digested within the person's body. Is there evidence for a physical or chemical change?
Chemical change.
Spin the wheel.
The wheel decides.