the carbon dioxide released when it's burnt is taken back in by the plant as it grows, so it's 'carbon neutral' . It is renewable.
8 of 21
What are the cons of using ethanol as a fuel?
Worries that as demand for biofuels increase, farmer will start growing plants for fuel instead of food, this could increase food prices, or even famine.
9 of 21
What are the pros of using biodiesel as a fuel?
It's carbon neutral and renewable. Energies don't need to be converted. Produces much less sulfur dioxide that ordinary diesel or petwro
10 of 21
What are the cons of using biodiesel as a fuel?
We can't make enough to completely replace diesel. It's expensive to make. Could increase food prices.
11 of 21
What are the pros of using hydrogen gas to power vehicles?
Combines with oxygen in the air to form just water - so it's very clean to burn.
12 of 21
What are the cons of using hydrogen gas to power vehicles?
You need a special, expensive engine and hydrogen isn't widely available. Still need energy from another source. Hydrogen is hard to store.
13 of 21
How can you test for an alkene?
By using bromine water. Alkenes will decolour bromine water.
14 of 21
What can polymers be used to make in every day life?
plastic bags, tights, new biodegradable packaging, waterproof coatings for fabrics, dental polymers, hydro-gel wound dressings, contact lesnes
15 of 21
What functional group is alcohol in?
-OH
16 of 21
Why is ethanol used in perfumes?
As it can mix with both oils (which gives the smell) and the water (which makes up the bulk).
17 of 21
What functional group does carboxylic acid have?
-COOH
18 of 21
Carboxylic acids dissolve in water to form alkaline or acidic solutions?
Acidic.
19 of 21
Ethanol + oxygen --> ......... + ..........
Ethanoic acid + water
20 of 21
What functional group do esters have?
-COO-
21 of 21
Other cards in this set
Card 2
Front
Name the first 3 alkanes.
Back
Methane, ethane, propane.
Card 3
Front
What is the general formula for alkanes?
Back
Card 4
Front
The shorter the alkane molecule, the more/less viscous it is.
Back
Card 5
Front
Shorter alkane molecules have a higher or lower boiling point?
Comments
No comments have yet been made