Semester 1 Final exam review 2024 part 1

Front

What is Kool-aid?

Back

A homogeneous mixture.

Front

What does the periodic law state about the arrangement of elements?

Back

Elements are arranged according to their atomic numbers so that elements with similar chemical properties are in the same column and properties repeat periodically.

Front

What type of property is boiling point?

Back

Physical Property.

Front

What must an atom have to be considered neutral if it has 12 positively charged subatomic particles?

Back

12 electrons.

Front

How many significant figures are in the number 0.0009009090000?

Back

10 significant figures.

Front

Define a homogeneous mixture.

Back

A mixture that has a uniform composition throughout.

Front

Define a heterogeneous mixture.

Back

A mixture that has a non-uniform composition.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its identity.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances.