STAAR REVIEW

Front

Which elements can conduct electricity? Gas, Metal, Non Metal

Back

Metal

Front

How do you determine the number of Protons of an element?

Back

It is the atomic number

Front

How do you calculate the number of Neutrons?

Back

Atomic mass - Atomic number

Front

What element does this atom represent? Options: Carbon (C), Magnesium (Mg), Sulfur (S)

Back

Carbon (C)

Front

Which element are non-reactive gas?

Back

Noble Gases

Front

Which two atomic particles are found inside the center of an atom?

Back

Proton and Neutron

Front

What determines how reactive an element is? Options: The number of protons, The number of neutrons, The number of Valence electrons

Back

The number of Valence electrons

Front

Who has the same number of valence electrons as Lithium (Li)? Options: Potassium (K), Beryllium (Be), Neon (Ne)

Back

Potassium (K)

Front

If Beryllium has an atomic mass of 9, how many Neutrons does an atom of Beryllium (Be) have?

Back

4

Front

How many Oxygen (O) atoms are in this formula?

Back

4