Year 7 Heat pressure and predictions.

Last updated 8 months ago

14 questions

Pressure in gases

Physical effects of pressure changes

Expansion in solids

Thinking about expansion

Year 7 Heat pressure and predictions.

Last updated 8 months ago

14 questions

Pressure in gases

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.

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.

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

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

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

(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

(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

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)

Place the materials in order form largest expansion to smallest expansion

https://demonstrations.wolfram.com/ThermalExpansionOfSolids/

Pb (an element)
Al (an element)
Fe (an element)
Zn (an element)

Place the materials in order form largest expansion to smallest expansion

https://demonstrations.wolfram.com/ThermalExpansionOfSolids/

Brass (a mixture - alloy)
Glass (a mixture)
Pyrex (heat proof glass)
Steel ( a mixture- alloy)

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)!

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 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

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.

Year 7 Heat pressure and predictions.

Year 7 Heat pressure and predictions.

Place the materials in order form largest expansion to smallest expansionhttps://demonstrations.wolfram.com/ThermalExpansionOfSolids/

Place the materials in order form largest expansion to smallest expansionhttps://demonstrations.wolfram.com/ThermalExpansionOfSolids/

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)!

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 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)!

Place the materials in order form largest expansion to smallest expansionhttps://demonstrations.wolfram.com/ThermalExpansionOfSolids/

Place the materials in order form largest expansion to smallest expansionhttps://demonstrations.wolfram.com/ThermalExpansionOfSolids/

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)!

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 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)!

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/

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 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)!

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/

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 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)!