(Q).
Answer the following question given this paragraph: Gases mix homogeneously when confined to same container. When several gases are added to a container, the individual gas particles mix freely, forming a homogeneous mixture in which each type of gas is randomly distributed throughout all the available volume. Q: What is formed when different gases are confined to the same container? Choices: - linear mixture - particulate mixture - compact mixture - homogeneous mixture A:
(A).
homogeneous mixture

(Q).
Answer the following question given this paragraph: When hit from behind in a car crash, a passenger can suffer a neck injury called whiplash . Explain in terms of inertia how this occurs, and how headrests can prevent the injury. Q: When hit from behind in a car crash, a passenger can suffer a neck injury called what? Choices: - inflammation - necklash - twisted neck - whiplash A:
(A).
whiplash

(Q).
Answer the following question given this paragraph: The process in which a liquid boils and changes to a gas is called vaporization . The temperature at which a liquid boils is its boiling point. The boiling point of water is 100C (212F). Other types of matter may have higher or lower boiling points. For example, the boiling point of table salt is 1413C. The boiling point of nitrogen is -196C. Q: What is the process in which a liquid boils and changes to a gas? Choices: - sublimation - freezing - melting - vaporization A:
(A).
vaporization