Paper burning is a form of a physical change known as combustion. The chemical bonds in between atoms holding them together are being changed with the heat, making it different on an atomic level.
I2 (aq) + starch (aq) I2 starch complex (aq) Equation 1 deep blue-black
Answer:
1. mechanical energy
2. Kinetic energy
3. Energy
4. Work
5. potential energy
Explanation:
1. The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. This sum is simply referred to as the total mechanical energy
2. All moving objects have kinetic energy. When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward.
3. Energy is defined as the ability to cause changes in matter. You can change energy from one form to another when you lift your arm or take a step. In each case, energy is used to move matter — you. The energy of moving matter is called kinetic energy.
4. transfer of energy that occurs when a force makes an object move. For work to occur, an object must move. The motion of the object must be in the same direction as the applied force on the object.
5. potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.
Answer:
2.5 moles
Explanation:
Number of moles = MassMolar mass
= 80⋅g32.06⋅g⋅mol−1 = ??mol
Note that sulfur likely exists in its elemental state as S8. I am perfectly justified in treating sulfur as S. The number of sulfur atoms is the same in each case.
Answer:
No you can't
Explanation:
The atomic number is the amount of protons in element's nucleus, that's one reason why. The second reason is that the atomic mass is protons and neutrons combined, their estimated value, which doesn't show how much neutrons are in an element. It does show combined, but not specifically neutrons
