Anything that has mass and takes up space is called * 1 point
matter
energy
heterogeneous
mixture
What holds atoms together in a molecule? *
1 point
gravity
physical bonds
chemical bonds
density

the answer is Matter for the first one the second one is a chemical bond

Explanation:

:)

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl