CHEM 1211K Exam 1

Question 1

matter

Accepted Answer

anything that takes up space and has mass

Question 2

Elements

Accepted Answer

substances that can't be broken down into something smaller

Question 3

compound

Accepted Answer

combo of elements in set, definite proportions

Question 4

mixture

Accepted Answer

mix of atoms/molecues in variable amounts

Question 5

what are the two different types of mixtures?

Accepted Answer

homo and hetero

Question 6

properties

Accepted Answer

characteristics

Question 7

What are the four properties?

Accepted Answer

physical, chemical, extensive, and intensive

Question 8

extensive properties

Accepted Answer

depends on the quantity of sample (mass)

Question 9

intensive properties

Accepted Answer

remain unchanged regardless of sample size (boiling point)

Question 10

hypothesis

Accepted Answer

prediction/explanation of observations that can be supported or refuted by further observation

Question 11

experiments

Accepted Answer

procedures designed to create observatinos to support or refute a hypothesis

Question 12

scientific theory

Accepted Answer

model that attempts to explain what and why nature does

Question 13

scientific law

Accepted Answer

explains the is and summarizes past observations and predict future ones

Question 14

ions

Accepted Answer

atoms with a charge

Question 15

what is another name for a covalent compound?

Accepted Answer

molecular

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