What is the relationship between temperature and kinetic energy during a phase change? The change of phase always occurs with a change of heat. However the temperature does not change. When we heat a solid, the energy supplied is used to increase the kinetic energy of its molecules, and thereby its temperature increases. Why is […]

What is the salt that is formed from the neutralization of H3PO4 and Ca Oh 2? In this reaction, phosphoric acid, H3PO4 , a weak acid, will react with calcium hydroxide, Ca(OH)2 , a strong base, to produce calcium phosphate, Ca3(PO4)2 , an insoluble salt, and water. Is calcium phosphate soluble in water? Calcium phosphate […]

Why do nonpolar molecules not dissolve in water? Nonpolar compounds do not dissolve in water. The attractive forces that operate between the particles in a nonpolar compound are weak dispersion forces. Water and oil form separate layers when they are mixed because the nonpolar oil will not dissolve into the polar. How do nonpolar molecules […]

Why do fungi Cannot perform photosynthesis? As recently as the 1960s, fungi were considered plants. However, unlike plants, fungi do not contain the green pigment chlorophyll and therefore are incapable of photosynthesis. That is, they cannot generate their own food — carbohydrates — by using energy from light. Why fungi Cannot make their own food? […]

Which trait would most likely lead a scientist to repeat an experiment and verify the data? Skepticism Which part of scientific design occurs when an experiment is conducted by more than one scientist to determine the validity of results replication research trials variables? The answer is: Trials. Which of the following is the most likely […]

Which of the following is not a part of the process of cellular respiration? Which of the following is NOT part of cellular respiration? The Calvin cycle. With oxygen present, what happens to the Krebs cycle and the electron transport chain? They provide organisms an alternative to glycolysis, break down glucose to produce carbon dioxide, […]

Is an earthquake potential or kinetic energy? An earthquake is a movement of the ground caused by the sudden release of potential energy to kinetic energy. Where does the energy of an earthquake originate? 1) Energy for Earthquakes comes from radioactive energy in Earth’s mantle. Radioactive decay produces heat that causes convection in the mantle. […]

Why are rising CO2 levels a problem? On the contrary, CO2 increases plant growth as it provides, together with water, the basic materials needed for photosynthesis. The principal risk of an increase in atmospheric C02-concentration IS its impact on the radiation balance of the atmosphere, the so-called “greenhouse” effect. When were CO2 levels last this […]

What is the classification of nicotine? Nicotine is classified as a stimulant of autonomic ganglia. Nicotine is a stimulant drug that acts as an agonist at nicotinic acetylcholine receptors. These are ionotropic receptors composed up of five homomeric or heteromeric subunits. What does toxic mean regarding nicotine? Nicotine poisoning describes the symptoms of the toxic […]

What kind of reaction is NaOH? Sodium hydroxide will react with acids to produce a water and an ionic compound. In this type of reaction, the hydroxide from sodium hydroxide reacts with the hydrogen ion in the acid, making water. The rest of the acid combines with the sodium ion from sodium hydroxide to make […]