Lesson 1 Flashcards
IDENTIFICATION
Chemistry is also called the “________ _______” as it deals with concepts from different fields such as biology, physics, geology, and others.
Central Science
IDENTIFICATION
Aneesa, together with her laboratory colleagues, is trying to detect the RNA of COVID-19. Which branch of chemistry is she studying?
Biochemistry
IDENTIFICATION
Ella is a forensic scientist. This would mean that she is in charge of analyzing fingerprints and substances in a crime scene. This is under what branch of chemistry?
Analytical Chemistry
MULTIPLE CHOICE
In an attempt to understand Penny’s erratic behavior, Sheldon suggests that Penny’s mood swings may be due to her “reproductive cycle” synchronizing with the other women in the building.
What stage of the scientific method is Sheldon in?
a. Test
b. Question
c. Hypothesis
d. Observe
c. Hypothesis
MULTIPLE CHOICE
With a hypothesis that drinking liquor may serve as a confidence booster, Penny makes Raj drink alcohol and sees that Raj is finally able to talk to girls.
What stage of the scientific method is Penny in?
a. Test
b. Question
c. Hypothesis
d. Observe
a. Test
NaCl (Sodium Chloride) is a pure substance or a mixture?
Pure Substance
Are hydrates pure substances or mixtures?
Pure Substances
TRUE OR FALSE
Metals are electron donors and they form anions.
FALSE.
Ionic Compounds are a combination of?
Metal and Nonmetals
MULTIPLE CHOICE
Ara is trying to determine the density of an unknown metal. What is she observing?
a. Chemical Property
b. Physical Property
c. Chemical Change
d. Physical Change
b. Physical Property
Ara is trying to determine the density of an unknown metal. What is she observing?
a. Intensive Property
b. Extensive Property
c. Physical change
d. Chemical change
a. Intensive Property
Cesca is measuring the height of the cylinder. What is she observing?
a. Intensive Property
b. Physical Property
c. Extensive Property
d. Both b and c
d. Both b and c
Vaporization is under what change?
Physical Change
The statue of liberty going through oxidation (copper to green) is under what change?
Chemical Change
Observing endothermic reactions is under what property?
Chemical property