Year 7 Heat pressure and predictions.
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Last updated 5 months ago
14 questions
Pressure in gases
3
https://www.focuselearning.co.uk/s/29y74vdumou1
For all of the sections use the simulations / videos to choose the correct options then copy the notes into your exercise book.
As the volume in a container increases the pressure will __________
Predict what you think will happen then use the link to test your prediction.
Analysis of variables
The volume is the __________ variable.
The pressure is the __________ variable.
The temperature, type of particles and number of particles are all __________ variables.
3
https://www.focuselearning.co.uk/s/29y74vdumou1
As the temperature in a container increases the pressure will __________
Predict what you think will happen then use the link to test your prediction.
Analysis of variables
The temperature is the __________ variable.
The pressure is the __________ variable.
The volume, type of particles and number of particles are all __________ variables.
3
https://www.focuselearning.co.uk/s/29y74vdumou1
https://billvining.com/mmlib_sims/#gen_10_7
What combination of volume, temperature and number of particles would give the highest pressure?
____________ temperature, ___________ volume and ____________number of particles
Other Answer Choices:
lowest
highest
Physical effects of pressure changes
1
A drink can that has had all of the drink tipped out does not collapse because the gas pressure inside the can is __________ the gas pressure outside the can.
If the gas pressure inside the can is __________ the gas pressure outside the can the can will explode.
If the gas pressure inside the can is __________ the gas pressure outside the can the can will implode.
https://screencast.apps.chrome/10Y5T8bKTPGbk0sbeqht33_tTenizCd9i?createdTime=2024-12-12T17%3A08%3A37.378Z
3
Collapsing can explanation (you need to get this into your notes)
When the gas inside the can is heated the particles __________ up and the collisions become more forceful and the pressure ______________ . The pressure inside the can is more than the pressure outside the can and gas escapes through the _________ in the lid,
until the pressure inside the can is __________ to the pressure outside the can.
Other Answer Choices:
increases
equal
hole
speed
2
(you need to get this into your notes)
When the lid is closed the pressure inside the can is the same as the pressure outside the can. There are __________ particles colliding with the inside of the can than the outside of the can but because the collisions are more_____________the pressure is the same.
Other Answer Choices:
forceful
fewer
5
(you need to get this into your notes)
When the gas inside the can is cooled down the particles move more ___________ and collide with the walls with _________force (and a lower frequency) so the pressure inside the can ______________. The pressure inside the can is now __________ than the pressure outside the can so the can _____________ .
Here is a bonus implosion.
https://drive.google.com/file/d/1z1Zi5V5eXuYqAdLZGnGsa9f9BzhF5SJv/view?usp=sharing
Other Answer Choices:
slowly
lower
implodes
less
decreases
Expansion in solids
1
https://demonstrations.wolfram.com/ThermalExpansionOfSolids/
Use the simulation to determine which of the materials expands the most and which of the materials expands the least.
The independent variable is __________
The dependent variable is the __________
The control variable is the __________ (you will need to choose this using the simulation)
1
Place the materials in order form largest expansion to smallest expansion
https://demonstrations.wolfram.com/ThermalExpansionOfSolids/
Place the materials in order form largest expansion to smallest expansion
https://demonstrations.wolfram.com/ThermalExpansionOfSolids/
- Zn (an element)
- Pb (an element)
- Fe (an element)
- Al (an element)
1
Place the materials in order form largest expansion to smallest expansion
https://demonstrations.wolfram.com/ThermalExpansionOfSolids/
Place the materials in order form largest expansion to smallest expansion
https://demonstrations.wolfram.com/ThermalExpansionOfSolids/
- Steel ( a mixture- alloy)
- Glass (a mixture)
- Brass (a mixture - alloy)
- Pyrex (heat proof glass)
1
Why do you think that glassware that is designed to be heated in a lab is made out of pyrex instead of normal glass? (Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
Why do you think that glassware that is designed to be heated in a lab is made out of pyrex instead of normal glass? (Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
1
From the simulation can we tell if alloys expand more or less than metal elements?(Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
From the simulation can we tell if alloys expand more or less than metal elements?
(Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
1
From the simulation can we tell if metals expand more than non metals?(Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
From the simulation can we tell if metals expand more than non metals?
(Note for the short answer questions you will not get a mark until I have had a look at your answers) (A single word answer will, however, always be worth 0 marks)!
Thinking about expansion
1
What do you think will happen to the size of a hole if piece of metal with a hole in the middle is heated?
The metal will__________
The hole will __________
Once you have made your choice use the hint to test your hypothesis.