Chemistry Semester 1 Harper

Front

The number of protons in an atom is known as the ____________ of that atom.

Back

atomic number

Front

Which statement correctly identifies a trend in the periodic table?

Back

Atomic radius decreases across a period and increases down a group.

Front

H₂O is what shape?

Back

bent

Front

What is the formula for sodium oxide?

Back

Na₂O

Front

Frying an egg is an example of what type of change?

Back

Chemical

Front

What is the definition of atomic mass?

Back

The weighted average mass of an atom's isotopes.

Front

Define electronegativity.

Back

The tendency of an atom to attract electrons in a chemical bond.

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom.

Front

What is the shape of methane (CH₄)?

Back

tetrahedral

Front

What is the pH of a neutral solution?

Back

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