Physical Science Semester 2 Final Review

What form of energy is stored by a battery?

• kinetic energy

• nuclear energy

• thermal energy

• potential energy

What is the atomic mass of a Si atom?

• 70

• 14

• 28

• 42

Which statement best describes the relationship between matter and energy in the universe?

• Changes of mass to energy and energy to mass can be seen in all chemical reactions

• the sum of mass and energy in the universe is increasing over time

• Matter and energy can be converted from one to another, but their sums stay constant

• The sum of mass and energy in the universe is decreasing over time.

What situation below best describes how to increase the electromagnetic field?

• increase the number of loops of wire

• decrease the number of loops of the wire

• surround the wire with an insulator

• use an insulator rather than a conductor

Which statement about the structure of an atom is true?

• Neutrons are not found in the atomic nucleus

• An electron "cloud" surrounds each atom

• A proton "cloud" surrounds each atom

• Protons and electrons are equal in mass

Which of the following would increase the resistance of a wire?

• decreasing the thickness of the wire

• shortening the length of the wire

• increasing the thickness of the wire

• resistance remains the same in a wire at all times

Electrons are subatomic particles with a negative

• volume

• electrical charge

• mass

• speed

The element Rb is most likely to react with what element?

• I

• Cd

• Cr

• Ag

Which group has the physical and chemical properties of metals?

• halogens

• carbon group

• alkali metals

• oxygen group

When F gains one electron,

• it becomes positively charged

• it becomes electrically neutral

• it also loses a neutron

• it becomes negatively charged