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Science crossword

Across
a substance made by mixing other substances together.
The second shortest wave
Heat transfer by gas or liquid
The state of matter that changes its shape to its container
the basic unit of a chemical element
The length of a wave
Heat transfer by touch
the number of protons in the nucleus of an atom
The way energy travels
rarefactions are regions of low pressure due to particles being spread further apart.
Heat transfer by waves
The wave with the 3rd longest wave length
Waves that travel in compressions adn rarefactions
a stable subatomic particle occurring in all atomic nuclei
energy stored in the bonds of atoms and molecules.
Bottom of a transverse wave
Waves that travel in crests and troughs
The columns of the periodic table
The state of matter that has a definite shape
a subatomic particle of about the same mass as a proton but without an electric charge,
substances that cannot be broken down into simpler substances
the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
Down
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
The combination of many tissues
The combination of multiple organs
The 3rd shortest wave
The wave with the longest wavelength
The middle of the em spectrum and the only waves we cans see
Top of a transverse wave
The energy of light
The shortest wave
a thing that is composed of two or more separate elements; a mixture.
a stable subatomic particle with a charge of negative electricity
The state of matter with no definite shape
The row of the periodic table
A combination of many cells
The smallest part of an organism