Answer the following question given this paragraph: Not all hydrogen atoms in molecular compounds are ionizable. In methane (CH 4 ), the hydrogen atoms are covalently bonded to carbon in bonds that are only slightly polar. The hydrogen atoms are not capable of ionizing and methane has no acidic properties. Acetic acid (CH 3 COOH) belongs to a class of acids called organic acids. There are four hydrogen atoms in the molecule, but only the one hydrogen that is bonded to an oxygen atom is ionizable. Q: Which class of acids acetic acid (ch 3 cooh) belongs to? Choices: - anorganic acids - strong acids - common acids - organic acids A:
organic acids
(Question)
Answer the following question given this paragraph: A third factor that affects the rate of dissolving is the size of solute particles. For a given amount of solute, smaller particles have greater surface area. With greater surface area, there can be more contact between particles of solute and solvent. For example, if you put granulated sugar in a glass of iced tea, it will dissolve more quickly than the same amount of sugar in a cube (see Figure below ). That's because all those tiny particles of granulated sugar have greater total surface area than a single sugar cube. Q: For a given amount of solute, do smaller particles have a greater or lesser surface area? Choices: - lesser - equal - neither - greater A:
(Answer)
greater
Ques: Answer the following question given this paragraph: Vertebrates have a system of muscles attached to the endoskeleton to enable movement. Muscles control movement by alternately contracting (shortening) and relaxing (lengthening). Generally, muscles work together in opposing pairs. Q: In vertebrates, a system of what structures attached to the endoskeleton enables movement? Choices: - nerves - tendons - tissues - muscles A:
Ans: muscles
(Q).
Answer the following question given this paragraph: Q: The part of a plant that is responsible for reproduction is the? Choices: - leaf - stem - root - flower A:
(A).
flower
Ques:Answer the following question given this paragraph: In some ways, a collection of gas molecules represents the simplest form of matter. Because the individual molecules are so far apart, they have only fleeting interactions with one another. In contrast, molecules that have clustered together to form a liquid or solid are constantly exerting forces on each other. In fact, it is only because of these attractive forces that molecular solids and liquids exist at all. In this lesson, we will look at some of the ways in which molecules and ions attract one another to form solids and liquids. Q: In some ways, a collection of gas molecules represents the simplest form of what? Choices: - life - energy - protein - matter A:

Ans:matter
Answer the following question given this paragraph: Geologists look for oil in folded layers of rock called anticlines. Oil moves through permeable rock and is trapped by the impermeable cap rock. Q: What do you call the folded layers of rock where geologists look for oil? Choices: - oscillations - synclines - crests - anticlines A:
anticlines