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- Multiple ChoicePlease save your changes before editing any questions.
HS-PS1-2 A water (H2O) molecule is made up of ___ atoms.
4
3
2
1
- Multiple ChoicePlease save your changes before editing any questions.
HS-ESS2-5 The cohesion of water is described as........
the amount of energy to convert 1g or a substance from a liquid to a gas.
resisting temperature change, both for heating and cooling.
an attraction between particles of the same substance.
an attraction between two different substances.
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is an example of a molecule?
LiF
NaCl
CH4
Al2O3
- Multiple ChoicePlease save your changes before editing any questions.
HS-ESS2-5 In a lab, David sees a coin floating on water. All of the following properties are responsible for this except?
pH
cohesion
polarity
surface tension
- Multiple ChoicePlease save your changes before editing any questions.
HS-ESS2-5 Which of the following explains why Coke is an acid while lye is a base?
Coke has a pH of 3 while Lye has a pH of 14
Coke is sweet and lye is salty
Coke has a pH of 14 while Lye has a pH of 3
Coke is liquid but lye is solid
- Multiple ChoicePlease save your changes before editing any questions.
HS-ESS2-5 A student mixes strawberry koolaid and water. A pH meter detects a pH of 5.4. What must be true about the solution?
There are no ions in the solution
There are more hydrogen ions H+
There are more hydroxide ions OH-
There is the same amount of H+ and OH-
- Multiple ChoicePlease save your changes before editing any questions.
HS-LS1-6 What makes a molecule polar?
Even balance of protons and neutrons
Uneven balance of protons and neutrons
Equal sharing of electrons
Unequal sharing of electrons
- Multiple ChoicePlease save your changes before editing any questions.
HS-LS1-6 Which of the following is a monomer for lipids?
fatty acids
nucleotides
amino acids
monosaccharides
- Multiple ChoicePlease save your changes before editing any questions.
HS-LS1-6 Which of the following macromolecules is responsible for information storage?
Lipids
Proteins
Nucleic Acids
Carbohydrates
- Multiple ChoicePlease save your changes before editing any questions.
HS-LS1-6 Which of the following characteristics allows carbon to form many different complex molecular structures?
Has high electronegativity
Can form four bonds
Has many isotopes
Is polar
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following could be a carbohydrate molecule?
- Multiple ChoicePlease save your changes before editing any questions.
In the video shown, which of the following properties of water is the most responsible for rising in the glass?
Cohesion
Adhesion
Surface Tension
High Specific Heat
- Multiple ChoicePlease save your changes before editing any questions.
A substance in the lab yielded a positive test result when biuret was added, but was negative when iodine was added. Which of the following was likely the unknown substance?
Water
Beans
Corn
Milk
- ReorderPlease save your changes before editing any questions.
Reorder the following substances in order from smallest to largest.
Proton
Carbon
CO2
glucose
starch
- Open EndedPlease save your changes before editing any questions.
What makes water unique? How would you distinguish it from other similar compounds?