Answer the following question given this paragraph: Molecules within a liquid are pulled equally in all directions by intermolecular forces. However, molecules at the surface are pulled downwards and sideways by other liquid molecules, but not upwards away from the surface. The overall effect is that the surface molecules are pulled into the liquid, creating a surface that is tightened like a film. This phenomenon is referred to as surface tension . Liquids that have strong intermolecular forces, like the hydrogen bonding in water, exhibit the greatest surface tension. Table below shows surface tension values for various common liquids. Q: Surface tension is a property of matter that is in what state? Choices: - mixture - water - Base - liquid A:
liquid
(Question)
Answer the following question given this paragraph: Q: Both androgen secretion and spermatogenesis occur continuously starting with what? Choices: - birth - mutation - walking - puberty A:
(Answer)
puberty
Ques: Answer the following question given this paragraph: Molecular compounds are inorganic compounds that take the form of discrete molecules . Examples include such familiar substance as water (H 2 O) and carbon dioxide (CO 2 ). These compounds are very different from ionic compounds like sodium chloride (NaCl). Ionic compounds are formed when metal atoms lose one or more of their electrons to nonmetal atoms. The resulting cations and anions are electrostatically attracted to each other. Q: What are inorganic compounds that take the form of discrete molecules called? Choices: - magnetic compounds - ionic compounds - functional compounds - molecular compounds A:
Ans: molecular compounds
(Q).
Answer the following question given this paragraph: Q: Arteries, veins, and capillaries are the three main types of what? Choices: - blood shapes - cell structures - blood pathways - blood vessels A:
(A).
blood vessels
Ques:Answer the following question given this paragraph: Image copyright James Steidl, 2014. During sexual reproduction, a sperm fertilizes an egg . Used under license from Shutterstock. com. Q: What fertilizes an egg during sexual reproduction? Choices: - gametes - mucus - cytoplasm - sperm A:

Ans:sperm
Ques: Answer the following question given this paragraph: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of acid rain on lakes. Suggest other compounds that might be effective in treating lakes. Give a plausible reason to explain why Ca(OH)2 and CaCO3 are used. ♦️ Approximately 95% of the chlorine produced industrially comes from the electrolysis of sodium chloride solutions (brine): NaCl(aq) + H2O(l) Cl2(g) + H2(g) + NaOH(aq) Chlorine is a respiratory irritant whose presence is easily detected by its penetrating odor and greenishyellow color. One use for the chlorine produced is in the manufacture of hydrochloric acid. Q: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? Choices: - oil rain - ozone rain - dioxide rain - acid rain A:
Ans:
acid rain