Science - Topic One (1)

Science - Topic One (1)

Chemistry - Making Better Boats, Sankey Diagram and Fractional Distilation.

published on September 22, 201313 responses 0 5.0★ / 5

What is the second stage to fractional distillation?

Heat up the oil
The hydrocarbons with the highest boiling point are removed at the bottom because it is hotter there.
The hydrocarbons with the lowest boiling point are removed at the top because it is cooler there.

What is a independent variable?

The thing that stays the same
the thing you choose to change
the thing you measure

What elements are in sulfur dioxide?

Sulfur and oxygen
sulfur and hydrogen
hydrogen and oxygen

What is corrosion?

Select the two correct answers
When a metal reacts to water, salts or oxygen.
When a substance oxide.
when a metal rusts
when a substance reacts to salts, oxygen and water causing it to rust

What is the reason to why we smell things?

DIFFUSION
the smell receptors in our noses
we have a nose.

what is the chemical formula for sulfur dioxide?

SO'2'
S'2'O'2'
S'2'H'2'O'2'

What is the chemical equation to rust?

FeO
H2O
CO2

What is density?

mass
volume
volume
mass
Volume/mass

What is the first stage to Fractional Distillation?

Select the two correct answers
The Hydrocarbons with the lowest boiling point are removed first at the top because it is cooler there.
Heat up the oil.
The Hydrocarbons with the highest boiling point are removed next at the bottom because it is hotter there.
Heat up the crude oil.

What is a sacrificial coating?

a layer over an easily corroded substance
protection from bad weather
paint

What are the elements to the fire triangle?

Heat, fuel and oxygen
fuel, oxygen and water
CO2, fuel and water

What is the reaction equation for hydrogen combustion?

2H'2' + O'2' = 2H'2'O
H'2' + O'2' = H'2'O
H'2' + O'2' =H'2'O'2'

What is a Dependent Variable?

The Thing you measure.
The thing that stays the same.
The thing you choose to change.
something in a experiment

What is a controlled variable?

What is the third stage to fractional disilliation?

heat up the oil
the hydrocarbons with the lowest boiling point are removed at the top because it is cooler there.
the hydrocarbons with the highest boiling point are removed at the bottom because it is hotter there.