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Q: What is a symbol used to represent a quantity that can change called?

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It is called a variable.

A variable

VARIABLE. When this variable has a fixed number assigned to it and does not change, it is called a "fixed variable".

Variable

The symbol is called DELTA and looks like a triangle. -----> Δ <----

x or any other variable

There is no particular symbol for "no change". However, if you know the quantity that has not changed, for example represented by H, you could write "ΔH = 0". Δ is the accepted symbol for "change in/of .." so if the change equals zero then there is no change.

In maths the symbols x and n are usually used to represent an unknown quantity. These may be referred to as a variable.

Variable

The symbol for an average speed is a bold v with a line over the top of it. This is the quantity of change in position over change in time.

The symbol for an average speed is a bold v with a line over the top of it. This is the quantity of change in position over change in time.

variable

a variable

In maths most vairables are represented with letters. EG. A+B=C So for a best guest and in this case i would say X would be the best for an unknown variable that could change, as x is normally associated with many unknowns.

chemical symbol

A number represents a quantity of units or items. A numeral is a symbol used to represent a number.

It is called a variable

element symbol.

An elipsis or * * * is used to present a change of scene.

A variable

variable

Those are called the symbol of the element.

The chemical symbol is one or two letters that represent an element.

A variable! like x!

It is a variable