The number of elements are

The particle in the atom that is found outside the nucleus is the

When two or more atoms join together, they form a

Which of these is an example of a compound

sodium and chlorine combine to form

Lemonade is an example of a

The physical property that describes how much a substance will strectch or bend is

An example of a physical property is

Ash is a substance formed when

knowing about chemical properties can help in identifying

An example of a change that is not a chemical change is

iron atoms combine with oxygen to form

______________ has mass and takes up space

A combination of iron fillings and powdered sulfur is a

rust results when oxygen combines with

H2O is the chemical formula for

A puddle of water is a

An ice cube is a

which of these is not found in the nucleus of an atom

electrons have this kind of charge

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