astronomy
what is a star?
a natural luminous body.
are two atoms of the same element identical?
no.
why do stars twinkle?
due to the effects of earths atmosphere.
how many alcoholic drinks does it take to effect your brain?
1 drink.
how far is the closest star?
4.24 light-years away.
how is matter held together?
chemical bonds
what are constellations.
a grouping of stars which form a pattern in the sky.
is HF (hydrofluoric acid) a strong or weak acid?
weak
why are stars so far away.
Because if the stars were much closer earth wouldn't exist.
how is ionic covalent bonds form?
when two or more ions come together.