Course Assessment Concp. Physics

Compared to other subatomic particles, the proton is _____

• heavy and neutral

• heavy and negatively charged

• heavy and positively charged

• light and negatively charged

Compared to other subatomic particles, the electron is _____

• heavy and positively charged

• light and positively charged

• light and neutral

• light and negatively charged

Which subatomic particles determine the identity of an element?

• electrons

• protons

• neutrons

• photons

Nuclei are held together by the strongest of the four fundamental forces of physics, _____

• the electrostatic force

• the gravitational force

• the strong nuclear force

• the weak nuclear force

This type of decay creates a new element

• alpha

• gamma

• alpha and beta

• none of the above

• beta

Periods on the periodic table are __________.

• Horizontal Rows
• Vertical Columns

How many neutrons does the isotope of lithium have?

• 8

• 3

• 5

If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:

• 1
• 2
• 3

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

Two nuclei with low masses are combined to form one nucleus of larger mass is called what?

• Nuclear fission
• Nuclear fussion
• Nuclear half-life
• Half-life