Straighterline Chemistry Final- deck 1 questions with correct answers

Straighterline Chemistry Final- deck 1
questions with correct answers

What is the term used for findings that are summarized based on a pattern or
trend?

a. Law

b. Hypothesis

c. Theory

d. Phenomena

e. Prediction - CORRECT ANSWERS ✔✔a. Law



Which of the following is a tentative explanation for a set of observations?

Select one:

a. Law

b. Hypothesis

c. Theory

d. Phenomena

e. Prediction - CORRECT ANSWERS ✔✔b. Hypothesis



If a liquid contains 60% sugar and 40% water throughout its composition then
what is it called?

Select one:

a. Solute

,b. Compound

c. Homogeneous mixture

d. Heterogeneous mixture

e. Solvent - CORRECT ANSWERS ✔✔c. Homogeneous mixture



Which of the following does not have a uniform composition throughout?

Select one:

a. Element

b. Compound

c. Homogeneous mixture

d. Heterogeneous mixture

e. Solvent - CORRECT ANSWERS ✔✔d. Heterogeneous mixture



Which one of these represents a physical change?

Select one:

a. Water, when heated, forms steam.

b. Bleach turns hair yellow.

c. Sugar, when heated, becomes brown.

d. Milk turns sour.

e. Apples, when exposed to air, turn brown. - CORRECT ANSWERS ✔✔a.
Water, when heated, forms steam.



What terms defines a mass which is exactly equal to 1/12 the mass of one
carbon-12 atom?

, Select one:

a. Isotope number

b. Mass number

c. Mass-to-charge ratio

d. Atomic number

e. Atomic mass unit - CORRECT ANSWERS ✔✔e. Atomic mass unit



C(graphite) and C(diamond) are examples of:



Select one:

a. isotopes of carbon.

b. allotropes of carbon.

c. the law of definite proportions.

d. different carbon ions. - CORRECT ANSWERS ✔✔b. allotropes of carbon.



The formula for sodium sulfide is

Select one:

a. NaS

b. K2S

c. NaS2

d. Na2S

e. SeS - CORRECT ANSWERS ✔✔d. Na2S