Atoms and the Periodic Table

Front

Which of the following is an element? salt, oxygen, vinegar, water

Back

oxygen

Front

A model of the most basic unit of oxygen is shown. Which of the following is true of oxygen?

• Oxygen is an element because its most basic unit is a single type of atom
• Oxygen is a compound because its most basic unit is a single type of atom
• Oxygen is a mixture because its most basic unit contains more than one particle
• Oxygen is a compound because its most basic unit contains more than one type of particle

Back

Oxygen is an element because its most basic unit is a single type of atom

Front

How is an element different from a compound?

Back

An element is made of a single type of atom, and a compound is made of two or more atom types.

Front

What statement is true about glucose?

Back

Glucose is a compound, because it is made up of more than one element

Front

Which elements in the periodic table have similar properties?

Back

Two elements in the same group

Front

What is the atomic number of an element based upon?

Back

number of protons in its nucleus

Front

A chemist determines that the atom she is studying has eight negatively charged particles outside the nucleus. What does this indicate about the atom?

Back

it contains eight electrons

Front

Which particle(s) are inside the nucleus of an atom?

Back

protons and neutrons

Front

In a model of Nitrogen, what do the blue spheres represent?

Back

electrons

Front

Which subatomic particle or particles have a negative charge?

Back

electrons only