Chemistry What is Energy
According to the law of conservation of energy, in theory, a bouncy ball should never stop bouncing. However, we know that it eventually stops. Where does the energy go.
Both A and B
Energy is not conserved because it is like a waste product similar to smoke or sweat.
False
Energy is not stored in food. Food only gives you energy when you eat it.
False
In a discussion about stored energy, students agree that both beans and coal have stored energy. The teacher then asked, "Where did the energy come from that is stored in beans and coal?"
From the Sun's light
Energy is measured in units of
Joules
Sound energy is.
The energy caused by an object's vibrations
Jan takes off her glove and grabs a handful of snow. She holds it in her hand until it begins to melt. Read the information above. Which statement is TRUE?
Thermal energy flows from a material of higher temperature to one at lower temperature.
Kimi takes butter from the refrigerator and leaves it on the counter, where it softens. How does the thermal energy of the molecules of butter change while the butter sits on the counter?
Thermal energy increases.
Energy can be transformed (changed) from one form to another.
True
When energy is transformed from one kind to another, some of it may change to heat.
True
Objects can have kinetic energy, potential energy, or both. Energy can be in the form of motion. Energy can also be stored by objects in various ways, including position, chemical bonds, or physical state. Refer to the information above. What type of energy found in food is important for organisms?
chemical potential energy
The law of __________________ of energy states that energy cannot be created or destroyed
conservation
an takes off her glove and grabs a handful of snow. She holds it in her hand until it begins to melt. Read the information above. In which direction does thermal energy flow in this situation?
from Jan's hand to the snow
Energy is defined as the ability to do work, or the ability to cause change. Read the definition of energy given above. What type of energy is produced during the fusion process which takes place inside the Sun?
nuclear
The greater the average kinetic energy of the particles in a sample of matter,
the higher the temperature is.