Chemistry S1 Review (without electron configurations)

Front

What do carbon-12 and carbon-14 have in common?

Back

They have the same number of protons.

Front

Which of these is an element? Salt (NaCl), Water (H2O), Oxygen (O), Carbon Dioxide (CO2)

Back

Oxygen (O) is an element.

Front

What is the half-life of a substance?

Back

The half-life of a substance is the time required for half of the substance to decay.

Front

If the half-life of Zn-71 is 2.4 minutes, how much of a 100.0 g sample remains after 7.2 minutes?

Back

12.5 g remains after 7.2 minutes.

Front

What state of matter has a definite shape and volume?

Back

Solid has a definite shape and volume.

Front

What state of matter has a definite volume but no definite shape?

Back

Liquid has a definite volume but no definite shape.

Front

What state of matter has neither a definite shape nor a definite volume?

Back

Gas has neither a definite shape nor a definite volume.

Front

What is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.