A
What does temperature measure?
Temperature measures the kinetic energy of atoms
A metal spoon is placed in hot soup. Describe what happens to the particles in the spoon over time.
The hot soup transfers its energy into the spoon. Which makes the atoms of the spoon increase in movement. Which makes its temperature go up
Give an everyday example of energy moving from one object to another and explain what happens to the particles.
Your example I'll let you know if its right
In which direction does thermal energy move?
Thermal energy moves from hot to cold objects
Two beakers contain the same liquid. One beaker has a higher temperature. What can you infer about the average kinetic energy of the particles in each beaker? Explain.
We can infer that the average kinetic energy of the liquid in the hotter temperature is higher because the atoms are moving faster
How does increasing temperature affect the motion of particles in a solid?
The motion of the atoms increases and they start to vibrate
Which change would most likely cause a thermometer reading to increase?
Increasing movement of atoms
Why is the statement “cold flows into a warm object” incorrect?
The statement is incorrect. We know hot flows into cold objects. “Cold” isint a thing , its an absence of energy
A student places a thermometer into cold water and then into warm water.
Explain why the thermometer reading changes using particle motion and energy transfer.
The thermometer loses energy when dipped in the cold water because the atoms are moving slower. The when dipped in hot water, the atoms are moving faster and transfer their energy into the thermometer
When you hold an ice cube in your hand, what happens to energy?
The energy in your hand transfers to the ice cube. By doing this the ice cube’s temperature rises and the motion of the particles increases. It melts as a result
Describe how a thermometer provides evidence of particle motion.
We are able to tell what the particle motion is because we know that the temperature is.
Give an example of a exothermic reaction
Ill let you know if its right
Explain how particle motion is different in a warm object compared to a cold object.
The atoms in a warm object move faster than the ones in a colder object
A hot cup of tea cools down over time. What happens to the particle motion in the tea?
What evidence supports this claim?
We know that the atoms slow down because the temperature cools
Give an example of a endothermic reaction
Ill let you know if youre right