StraighterLine Chemistry Final – Deck 1 Complete Flashcards, Study Guide & Exam Review 2026–2027.

StraighterLine Chemistry Final – Deck 1 Complete
Flashcards, Study Guide & Exam Review 2026–2027
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


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,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

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, 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




What is the name of ClO - ion?

Select one:

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