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WorksheetsChem 3 L4 Recap
Total questions: 28
Worksheet time: 15mins
A neutron has what charge?
Positive
Negative
It has no charge (it is neutral)
A proton has what charge?
Positive
Negative
It has no charge (it is neutral)
An electron has what charge?
Positive
Negative
It has no charge (it is neutral)
How many electrons does oxygen have?
8
16
2
15
How many neutrons are in magnesium?
12
24
25
36
Slate is a dark rock showing crystals and layers. It was formed by shale being changed by heat and pressure. What kind of rock is it?
Sedimentary
Igneous
Metamorphic
Chalk is a white rock formed from the shells of sea animals which collected at the bottom of shallow seas. What kind of rock is it?
Sedimentary
Igneous
Metamorphic
Granite is a speckled rock. The speckles are different crystals that have formed from melted rock which cooled slowly inside the earth. What kind of rock is it?
Sedimentary
Igneous
Metamorphic
Pumice is a rock that contains air bubbles. It is formed by volcanic rock cooling and trapping air inside. What kind of rock is it?
Sedimentary
Igneous
Metamorphic
Look at the rock in the image. What kind of rock do you think it is?
Sedimentary
Igneous
Metamorphic
What is a mineral?
A shining rough surfaced rock
A mineral is a naturally occurring inorganic element or compound
a solid substance with a fairly well-defined
rocks, sands, and soils
___ is the name for molten rock below Earth's surface.
magma
lava
a solid in which the atoms are arranged in a pattern that repeats
mineral
crystal
a naturally occurring solid that has a crystal structure
mineral
luster
fracture
crystal
C3H8
What is the molecular formula for butane?
C3H8
C4H10
C5H12
C2H6
What is fractional distillation?
a process used to separate crude oil
a process used to burn up fuels
a way to make different products
how oil is extracted from the ground
Which of these substances is not a hydrocarbon?
methane
ethane
propane
butane
ammonia
Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture
melting point
boiling point
freezing point
chemical reactivity
Crude oil is made up of:
Ethane
Butane
A mixture of different hydrocarbons
Extremely large hydrocarbons which are broken up once extracted
Where do short chain hydrocarbons collect?
At the top
In the middle
At the bottom
Where do long chain hydrocarbons collect?
At the top
In the middle
At the bottom
Which gas will form a white precipitate when bubbled through limewater, making the limewater turn milky?
nitrogen
oxygen
argon
carbon dioxide
Order the following statements to describe how to test for the presence of oxygen gas.
light a splint
extinguish the splint to leave a glowing splint
place the glowing splint in oxygen gas
the glowing splint will relight
