These are some more questions, they're not multiple answers they're S.A so the questions will be first and my answers will be on the bottom.
17. Describe the difference between thermal energy and temperature. Use the following words to help structure your answer: particles, kinetic (movement) energy, thermal energy, and measurement. (3 points)
18. Write an explanation to show the processes and particle arrangement of water as it changes state from a solid, to a liquid, and to a gas. (3 points)
19. Describe three ways to increase the rate salt dissolves in water. (3 points)
20. Describe a plan to separate a sand, salt, and iron filings mixture. Explain each step, the properties of the substances used in the separation, and the type of changes involved in the process. (5 points)
ANSWERS:
17. Thermal energy is caused by heat, temperature is heat and is caused by energy. Temperature is controlled by Thermal energy, particals in the air have an increased amount of kinetic energy which causes temperature to rise.
18. It starts in the air, in the air water is frozen and is ice, ice is the solid. Then the ice (solid), melts and turns into a liquid water. Then it rains, when it rains the sun come out and evaporates the water. That is when the water turns into a gas.
19. You can stir it, stirring it makes the salt dissolve faster since your moving it around. You can also heat it up more, heating equals faster to dissolve or melt. Or you can crush it, crushing it will make it smaller which makes it easier to dissolve.
20. First you use a magnet to remove all of the iron, the iron will get stuck to the magent allowing you to remove it. For the sand, you can put a whole bunc of water and wait for the salt to dissolve, then filter it. The salt will come back after the water evaporate's.
Thank you for all who helps out.
Another connexus student just read your book stop cheating first we upgrade our system then you guys find another way to cheat your way out well guess what "Annabelle" we have traced your address and now are going to be expelled frome homeschool academics of connexus academy
I am not cheating, I have already done the test I am looking how I did is that not alright? I'm sorry if I did something wrong but I literally have already done the test.
which of the following can cause muations to occur in cells
17. Good job on explaining the difference between thermal energy and temperature! Just a small correction: thermal energy is the total kinetic energy of all the particles in a substance, while temperature is a measure of the average kinetic energy of those particles. So, temperature is a measurement of thermal energy.
18. Your explanation of the changes in state of water is mostly correct. However, it's important to note that when water changes from a solid to a liquid, it undergoes the process of melting, not just "turning into a liquid water." Similarly, when it changes from a liquid to a gas, it undergoes the process of evaporation, not just "the sun comes out and evaporates the water." The heat from the sun provides the energy needed for the particles of water to gain enough kinetic energy to break free from the liquid phase and become a gas.
19. The ways you described to increase the rate at which salt dissolves in water are correct. Stirring helps by increasing the contact between the salt and water, allowing for more efficient mixing. Heating the water increases the kinetic energy of the particles, making them move faster and increasing the rate at which they interact with the salt, resulting in faster dissolution. Crushing or grinding the salt into smaller particles increases the surface area exposed to the water, allowing for more effective dissolution.
20. Your plan to separate the mixture of sand, salt, and iron filings is a good start! However, there are some improvements that can be made. First, use a magnet to remove the iron filings as you described. This works because iron is magnetic while sand and salt are not. Then, you can add water to the remaining mixture to dissolve the salt. After stirring and allowing time for the salt to dissolve, you can use a filter paper to separate the sand from the saltwater solution. The sand will be caught in the filter paper while the saltwater passes through. Finally, you can evaporate the water from the saltwater solution. This can be done by gently heating the solution, either by placing it in a warm place or using a gentle heat source. As the water evaporates, the salt will be left behind as solid crystals. This process is called evaporation.
Good job on your answers! Keep up the great work!