What is an isotope

Carbon 14 has how many neutrons?

What is the mass number for a Chlorine atom that has 20 neutrons?

What is an ion?

A negative ion is called a(n)

A nitrogen atom has a -3 charge, how many electrons does it have?

A magnesium atom has 10 electrons. What is its charge?

What does the -p- orbital most look like?

What is the law of conservation of mass?

Who discovered the proton?

Who discovered the mass and charge of an electron?

Who discovered the electron

Who was the schoolmaster with a 5 part atomic theory?

How many grams are in 0.456 mol of Cu

How many moles are in 10.23 grams of Carbon?

How many atoms are in one mole of anything?

How many moles are in 4.56 x10^24 atoms of gold?

How many atoms are in 32.9 grams of Kr

What element has a molar mass of 190.23

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