Basic Concepts of Matter

Which of the following would be considered a basic form of matter? CLICK ALL THAT APPLY

• GAS

• SOLID

• LIQUID

• SLIMY

The quantity of matter that makes up any physical object is called the:

• nucleus

• atomic number

• mass

• energy

When a neutral atom gains or loses an electron, the atom is said to be:

• A. radioactive

• B. unstable

• C. ionized

• D. neutral

Which of the following are accurate statements regarding the characteristics of x-rays? 1. They are highly penetrating and invisible. 2. They cause certain crystals to fluoresce. 3. They travel in straight lines at the speed of light.

• 1 and 2

• 1 and 3

• 2 and 3

• 1, 2, and 3

The term for a continuous path for the flow of electrical charges from the power source through one or more electrical devices and back to the source is:

• electrical circuit.

• voltage.

• frequency.

• resistance.

The common unit of measure for the potential difference across an x-ray tube is the:

• ampere.

• milliampere.

• volt.

• ohm.

When an atom gains or loses an electron it is called a(n):

• ion.

• electron.

• photon.

• proton.

One of the most important elements in radiology that is used to create x-rays is:

• calcium.

• tungsten.

• carbon.

• lead.

(True/False) X-rays cause ionization in the human body. This has a negative effect on the body.

• True

• False

(True/False) X-rays can cause cancer.

• True

• False