Answer the following question given this paragraph: One important characteristic that determines the way in which elements behave is the total size of each atom. Free atoms are spherical in shape, so the relative sizes of the elements can be compared by looking at each atom's atomic radius , which is the distance from an atom's nucleus to the electrons in the outermost orbitals. You might expect atoms to generally grow larger as they go up in atomic number (which is equal to the total number of electrons in the neutral atom). Indeed, if you look at a single group of the periodic table, this trend holds true. Iodine is larger than bromine, which is in turn larger than chlorine and fluorine. In the case of a single group, each successive row places electrons in a higher principal energy level. Since higher energy levels are farther from the nucleus on average, this results in a larger total volume occupied by the atom. Q: Free atoms are spherical in shape, so the relative sizes of the elements can be compared by looking at each atom's atomic what? Choices: - weight - axis - angles - radius A:
radius
Answer the following question given this paragraph: Summary The atoms in chemical compounds are held together by attractive electrostatic interactions known as chemical bonds. Ionic compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero. The ions are held together in a regular spatial arrangement by electrostatic forces. Mostcovalent compounds consist of molecules, groups of atoms in which one or more pairs of electrons are shared by at least two atoms to form a covalent bond. The atoms in molecules are held together by the electrostatic attractionbetween the positively charged nuclei of the bonded atoms and the negatively charged electrons shared by the nuclei. The molecular formula of a covalent compound gives the types and numbers of atoms present. Compounds that contain predominantly carbon and hydrogen are called organic compounds, whereas compounds that consist primarily of elements other than carbon and hydrogen areinorganic compounds. Diatomic molecules contain two atoms, andpolyatomic molecules contain more than two. A structural formula indicates the composition and approximate structure and shape of a molecule. Single bonds, double bonds, and triple bonds are covalent bonds in which one, two, and three pairs of electrons, respectively, are shared between two Saylor URL: http://www. saylor. org/books. Q: What kind of compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero? Choices: - neutral compounds - zero charged compunds - zeronic ions - ionic compounds A:
ionic compounds
Q: Answer the following question given this paragraph: Q: The neck of the uterus, called the cervix, opens into what? Choices: - bladder - testicle - retina - vagina A:
A: vagina
Question: Answer the following question given this paragraph: Red blood cells carry proteins called antigens on their surface. People may vary in the exact antigens their red blood cells carry. The specific proteins are controlled by the genes they inherit from their parents. The particular antigens you inherit determine your blood type. Q: What are the specfic types of proteins that determine your blood type called? Choices: - Plasma - antibodies - Globulins - antigens A:
Answer: antigens
*Question*
Answer the following question given this paragraph: Q: Structural adaptations in flying animals often contribute to reduced what? Choices: - blood flow - eyesight - respiration - body mass A:
**Answer**
body mass
(Question)
Answer the following question given this paragraph: Pressure and temperature at constant volume are directly proportional. Q: When volume does not change, temperature is proportional to what other property? Choices: - Length - resistance - Density - pressure A:
(Answer)
pressure