How do you find number of protons?

Which subatomic particle is negative?

rows of elements are ______________ and columns are ________________

How many oxygen atoms are in the compound chalk?

The most common element in our atmosphere is nitrogen gas.

Which is not true about the periodic table?

Which would not be a compound?

chemical formula for sodium

What is the mass number of iron?

How many neutrons are in an atom of Iodine?

Every element has a different number of _______________ in its nucleus.

What is the most reactive metal? What is the name of its family?

Matter is anything that has _____________ and takes up _____________.

When 2 or more elements are chemically combined, we call it a(n)...

Which of the following particles is located in the nucleus of an atom?

What is the mass number of Bromine?

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