No, gravity is not a type of Matter; This is a force that the earth exerts to the objects under it's range.
when a thing changes to something else e.g a solid to liquid
gravity and something else
Like anything else, it cools. When enough energy is removed, it will freeze and become a solid.
For water - and somewhere in the middle of the liquid range - that's one calorie. But for everything else its something else.
Because, the person who discovered gravity was named Gravity Dickakiss
Why, it is a liquid simply because Ketchup takes the form of the bottle it's in.
when a thing changes to something else e.g a solid to liquid
Plasma
Hydrogen can exist as a solid, a liquid, a gas, or a plasma, as well as many other states.
Matter will only change from a liquid to a solid when you take away heat.If a liquid turns into a solid when you ADD heat, then something else is happening. It could be a chemical reaction or a more simple example would be if you heat a mixture of something that has water in it and the water evaporates. What is left behind is whatever did not evaporate and could be a solid. This is technically not the same matter that you had before, so you can't say the matter turned into a solid from a liquid by adding heat.
Neither. A physical change is changing something's tangible properties, such as shape or state of matter (solid, liquid, or gas), while a chemical change is turning something into something else entirely. For example, water freezing into ice is a physical change, but cake batter turning into cake is a chemical change. So, if it's the same thing that you start with as a liquid or gas and it simply becomes a solid, it's a physical change. If it becomes something else entirely, it's a chemical change. I hope that helped.
A shape is intangible, it's just an outline or configuration of something else. So it is neither a solid, liquid, or gas... it isn't matter.However, I do think you mean to say, "Which forms a definite shape: a solid, liquid, or gas?". In this case, only a solid has a definite shape. Liquids and gases take on the shape of its container, which can vary. Solids are the only state of matter that have their own shape, not dependent on a container.
In its normal state rubber is a solid, but as with anything else, it will change its state with the application of heat.
The mantle layer of the planet Earth is made of hot liquid rock (called magma). The crust, upon which we live and type, floats on the mantle.
gravity and something else
They are a good start for something else.
The answer depends on what the solid is: ice, a hydrate crystal, or something else.