What charge does vinyl carry? When?

Vinyl carries a negative charge after it is rubbed together with wool.

 

What charge does acetate carry? When?

Acetate carries a positive charge after it is rubbed together with cotton.

 

What happens when two positively charged objects are close together?

When two positively charged objects are close together the two objects repel each other.

 

What happens when two negatively charged objects are close together?

When two negatively charged objects are close together the two objects repel one another.

 

What happens when positive + negative objects are close together?

When a positive and negative charged  objects are close together they attract each other.

 

what happens when a neutral object is close to a charged object?

When a neutral object is close to a charged object they will attract one another.

 

 

 

 

Compound Name(s): Calcium Oxide, Lime, Quicklime

Formula: CaO

Physical properties:

• Solid, can be seen as lumps or granular powder, white to pale yellow/brown, odorless
• Density: 3.34 cm3
• Melting point: 2572°C
• Boiling point: 2850°C

Chemical properties:

• When dissolved in water creates Calcium Hydroxide, Ca(OH)2
• calcium oxide will react with carbon dioxide to form calcium carbonate, Ca(CO3)

Calcium Oxide uses:

• Calcium oxide is created by burning limestone, it can be used in a wide range of professional, industrial, and consumer purposes.
• Calcium Oxide can be used in a mixture for the production of articles that can be used for vehicles, construction, fabrics, wood, rubber, plastics, leather and more.

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Curiosity questions:

Me:

Are there any environmental effects caused when calcium oxide/Calcium hydroxide is released into the environment?

• When released into the environment, calcium oxide reacts with water to create calcium hydroxide. Severe effects calcium hydroxide has had on the environment are considered to be caused by pH changes. Calcium hydroxide is considered not to be harmful to the environment.

What is the hazard identification for calcium oxide?

• Calcium oxide is identified as a corrosive material, exposure to the chemical can effect the body if it is inhaled, comes in contact with your eyes or skin, or is digested. severe burns may also be a result with long-term exposure of Calcium oxide.

 

Alyson:

• The intake of Calcium Hydroxide can cause an upset stomach. It causes significant damage/irritation to your gastrointestinal tract. This results in side affects such as nausea, vomiting or severe abdominal pain.

• Yes. When Calcium Oxide and Calcium Carbonate mix, they create a form called Calcium Carbonate.