Q: What are the chemical formulas for covalent compounds referred to as? Read this paragraph and choose the correct option from the provided answers: The chemical formulas for covalent compounds are referred to as molecular formulas because these compounds exist as separate, discrete molecules. Typically, a molecular formula begins with the nonmetal that is closest to the lower left corner of the periodic table, except that hydrogen is almost never written first (H2O is the prominent exception). Then the other nonmetal symbols are listed. Numerical subscripts are used if there is more than one of a particular atom. For example, we have already seen CH4, the molecular formula for methane. Naming binary (two-element) covalent compounds is similar to naming simple ionic compounds. The first element in the formula is simply listed using the name of the element. The second element is named by taking the stem of the element name and adding the suffix -ide. A system of numerical prefixes is used to specify the number of atoms in a molecule. Table 4.1 "Numerical Prefixes for Naming Binary Covalent Compounds" lists these numerical prefixes. Normally, no prefix is added to the first element's name if there is only one atom of the first element in a molecule. If the second element is oxygen, the trailing vowel is usually omitted from the end of a polysyllabic prefix but not a monosyllabic one (that is, we would say "monoxide" rather than "monooxide" and "trioxide" rather than "troxide"). Table 4.1 Numerical Prefixes for Naming Binary Covalent Compounds Number of Atoms in Compound. Choices: - nucleus formulas - magnetic formulas - Electron Formulas - molecular formulas A:
molecular formulas

Q: Ether molecules have an oxygen atom and can engage in hydrogen bonding with which other molecules? Read this paragraph and choose the correct option from the provided answers: Ether molecules have an oxygen atom and can engage in hydrogen bonding with water molecules. An ether molecule has about the same solubility in water as the alcohol that is isomeric with it. Choices: - carbon dioxides - proteins - lipids - water A:
water

Q: Q: What are the two types of charges? Read this paragraph and choose the correct option from the provided answers: Conservation of charge is the fourth of the five conservation laws in physics. There are two charges, positive and negative, and the conservation of electric charge indicates that the total charge in the universe remains the same. In any closed system charge can be transferred from one body to another or can move within the system but the total electric charge remains constant. Choices: - ions and neutrons - energy and mass - volume and acceleration - positive and negative A:
A: positive and negative

Question: Q: A largemouth bass is an example of a cold-blooded animal that conforms to what aspect of the lake it inhabits? Read this paragraph and choose the correct option from the provided answers: Choices: - depth - precipitation - oxygen - temperature A:
Answer: temperature

*Question*
Q: What simple sugar is the cell's primary source of energy? Read this paragraph and choose the correct option from the provided answers: Molecular formulas tell us how many atoms of each element are present in one molecule of a molecular compound. In many cases, the molecular formula is the same as the empirical formula. For example, the molecular formula of methane is CH 4 , and because 1:4 is the smallest whole-number ratio that can be written for this compound, that is also its empirical formula. Sometimes, however, the molecular formula is a simple whole-number multiple of the empirical formula. Acetic acid is an organic acid that gives vinegar its distinctive taste and smell. Its molecular formula is C 2 H 4 O 2 . Glucose is a simple sugar that cells use as their primary source of energy. Its molecular formula is C 6 H 12 O 6 . The structures of both molecules are shown in Figure below . They are very different compounds, yet both have the same empirical formula, CH 2 O. Choices: - carbon - nicotine - chloride - glucose A:
**Answer**
glucose

Q: Q: When does internal reflection occur? Read this paragraph and choose the correct option from the provided answers: Total internal reflection occurs when light goes from a slow (high index of refraction) medium to a fast (low index of refraction) medium. With total internal reflection, light refracts so much it actually refracts back into the first medium. This is how fiber optic cables work: no light leaves the wire. Choices: - when light goes from a slow medium to another slow medium - when light goes from a fast medium to a slow - when light goes from a fast medium to another fast medium - when light goes from a slow medium to a fast A:
A: when light goes from a slow medium to a fast