Investigation 1 (Experiences 1, 2, & 5) Assessment

Identify all of the items that represent an element and not a molecule. Select ALL that apply.

• Ne
• Li
• H
• CO2
• N2

Choose the TWO molecules from the list below that contain the GREATEST kinetic energy. (s means SOLID, g means GAS, l means LIQUID)

• SiO2 (s)
• NO (g)
• H2O (l)
• CO (g)
• Na2O (s)

Which state has a definite volume and takes the shape of its container?

• Solid
• Liquid only
• Gas only
• Both liquid and gas

Which state of matter takes both the shape and volume of its container?

• Solid
• Liquid only
• Gas only
• Both liquid and gas

Which of the following changes is a CHEMICAL change?

• Bending rubber
• Melting ice
• cooking food
• cutting paper

A CHEMICAL change occurs when a piece of wood

• splits
• is painted
• burns to ashes
• is cut

The particles that are found in the nucleus of an atom are:

• Neutrons and Electrons
• Electrons ONLY
• Protons and Neutrons
• Protons and Electrons

An element has an atomic number of 18. The number of protons and electrons in a neutral atom of the element are:

• 18 protons and 18 electrons
• 18 protons and 36 electrons
• 10 protons and 8 electrons
• 9 protons and 9 electrons

What does the number of 84 in the name of Krypton-84 represent?

• Atomic Number
• Mass Number/atomic mass
• The sum of protons and electrons
• Twice the number of protons

In which of the following sets is the symbol of the element, the number of protons, and number of electrons given correctly?

• In, 49 protons, 49 electrons
• Zn, 30 protons, 60 electrons
• Cs, 55 protons, 132 electrons
• F, 19 protons, 19 electrons