Fall Final Exam Review 24-25

Front

What indicates a TRANSITION metal's charge?

Back

Roman numerals are used to indicate the charge of transition metals in chemical formulas.

Front

In the modern periodic table, elements are arranged by:

Back

Elements are arranged by atomic number, which is the number of protons in the nucleus of an atom.

Front

What is the dot diagram for oxygen (O)?

Back

The dot diagram for oxygen shows six valence electrons, represented as dots around the symbol 'O'.

Front

Is this a correct dot diagram for fluorine (F)?

Back

True, the correct dot diagram for fluorine shows seven valence electrons.

Front

Classify the following molecule: H2O.

Back

H2O is classified as a polar molecule due to the difference in electronegativity between hydrogen and oxygen.

Front

What is a polar molecule?

Back

A polar molecule has a partial positive charge on one end and a partial negative charge on the other end due to unequal sharing of electrons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.

Front

What is a nonpolar molecule?

Back

A nonpolar molecule has an even distribution of electrical charge, meaning there are no distinct positive or negative poles.