Why is a golf ball more dense than a ping pong ball?
Figure 3 A golf ball is denser than a table-tennis ball because the golf ball contains more matter in a similar volume. Density is the mass per unit volume of a substance.
How much more matter is in a golf ball than a table-tennis ball?
If two objects have the SAME SIZE (example -a golf ball and a ping pong ball) they have the SAME VOLUME (they take up the same amount of space, right) BUT the MASS of the two is very different (there is a lot more matter in the golf ball than the ping pong ball ) therefore the DENSITY OF THE golf ball is larger than …
When a liquid changes into a gas What kind of physical change has occurred?
Figure 3.3. The melted ice cube may be refrozen, so melting is a reversible physical change. Physical changes that involve a change of state are all reversible. Other changes of state include vaporization (liquid to gas), freezing (liquid to solid), and condensation (gas to liquid).
What physical property does water oil mercury alcohol share?
Answer. They both have thermal conductivity in common . they also share the property of water solubility which is lesly taken into account in terms of alcohol and water because they almost all liquid have this property .
What properties do alcohol and water share?
Water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.
Is melting butter a chemical change or physical?
When you first apply heat to a solid substance like butter, it melts into a liquid. This is a physical change. You can prove that this is a physical change because if you put the melted butter back in the fridge, it changes back to solid butter.
Is Heating Butter a chemical change?
Thus, melting of butter is a reversible process. No change in the chemical composition occurs when it is melted. Thus, melting of butter is a physical process because the physical appearance of the butter changes, the change is visible to eyes, the change can be reversed and no chemical change occurs.
Is melting an ice cube a chemical change?
As an ice cube melts, its shape changes as it acquires the ability to flow. However, its composition does not change. Melting is an example of a physical change . A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not.
When a whisked egg is heated it scrambles?
Answer. it is a CHEMICAL change cuz it’s proteins are denaturated when it is heated.
When whisked egg is heated it forms a lump can this change be reversed?
The main component of egg is called protein. This protein is in the form of amino acid chain by weak bonds. When we heat up the proteins, these bonds break and it creates the formation of the lump. This change can never be reversed.
Does beating an egg conserve mass?
2 Answers. The main purpose of beating an egg is to “denature” the protein within the egg. When an egg is heated to 40 degrees celsius, its protein chains become denatured and elongate, which allows chemical reactions to occur. The egg changes from a liquid solution of protein into a solid mass.
Why is my fried egg rubbery?
Continued heating causes more bonds to form, leaving less space for the water. When eggs are overcooked, the protein web becomes so tight and retains so little water that the egg white becomes rubbery and the yolk chalky, a textural difference due to fat interspersed with the protein web in the yolk.