8th Grade Science Elements Review

True or false - in an atom, the number of protons equals the numbers of neutrons

Which are true about nonmetals?

The sum of an atom's protons and neutrons in the nucleus is known as the

Which has a positive charge?

Which element occurs in nature in the form of a diatomic molecule?

Today's periodic table arranges the elements according to increasing

Atoms with the same number of protons and a different number of neutrons is known as

Atoms consist of

Which property of metal is the ability to be pulled out or drawn into a long wire

Which family contains elements that usually gain or share 1 electron when reacting with others?

The metals in group 2 of the periodic table are called

Mendeleev's original periodic table organized the elements by increasing

The number of protons in the nucleus is known as the

The destruction of a metal is called

The average mass of all the isotopes of that element is known as the

Which family means "salt forming"?

Which element has exactly one proton and one electron?

Which elements are found in group 18 on the periodic table?

Which family has four atoms that can gain or share electrons when reacting with other elements?

True or false - scientists create models to study atoms because they are too small to see

What collects in a layer in the upper atmosphere where it screens out harmful radiation?

The ease and speed with which an element combines, or reacts, with other elements is called

Which family usually gains or shares two electrons when reacting with other elements?

Which has no charge?

What occupies most of an atom's volume

Which family contains elements that gain or share three electrons when reacting with others?

Which element occurs in nature as a triatomic molecule?

What type of metals are mixed with more common metals to make alloys?

Which property of metals means being able to transfer heat or electricity to another object?

The columns of a periodic table are known as

What has characteristics of both metals and nonmetals?

Which property of metals means being able to be hammered or rolled into flat sheets?

The metals in group 1 in the periodic table are called

Which has a negative charge?

The rows of a periodic table are known as