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rough

Not smooth or level, not smooth or level; uneven

transparent

to see through

matter

anything that has a mass and takes up space

gas

Has no definite shape or volume

engineers

engineers use design and build useful things

properties

characteristics used to describe an object

solid

a form of matter that has a definite shape and volume

shape

a form of something

liquid

a form of matter that flows, has constant volume, and takes the shape of its container

soft

opposite of hard

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