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The elements in a column of the periodic table are known as - correct answers a group Which of these elements is chemically similar to oxygen? A) Sulfur B)calcium C)iron D)nickel E)none of these - correct answers A)Sulfur bc, they are in the same group Which of the following elements are the least reactive? A) Alkali metals B) Noble gases C) Halogens D) Alkaline earth metals E) Metalloids - correct answers B) Noble gases An exothermic reaction causes the surroundings to... A) warm up B)...

The mass of the particle doesn't weigh enough to worry about. - correct answers Electron The mass of the particles is 1 a.m.u. - correct answers Proton This particle is located outside the nucleus - correct answers Electron This particle is found only in the nucleus - correct answers Proton and Neutron This particle has a charge of -1 - correct answers Electron This particle has no charge - correct answers Neutron This particle has a charge of +1 - correct answers Proton ...

chemical bonds - correct answers compounds are composed of atoms held together by ______ _______. this is the result of electrostatic attraction between atoms. 2 types: covalent and ionic ionic bonds - correct answers -an electrostatic attraction between ions of opposite charge -metal + nonmetal -metal loses electrons and the nonmetal gains electrons covalent bonds - correct answers -an electrostatic attraction between two or more atoms that are sharing electrons -nonmetal + nonmetal -...

oxyacid - correct answers an acid with a main atom, oxygen, and one or more hydrogen atom Acid - correct answers a substance that has a proton that can be removed by a water molecule when in a water solution Hydronium ion - correct answers H₃O⁺ positively charged hydrated hydrogen ion produced when an acid ionizes in water what can X (a negatively charged ion produced when the acid ionizes) be? - correct answers - may be a monatomic ion (Ex: Cl⁻) - may contain oxygen (Ex: NO₃)...

Octet rule - correct answers Atoms lose, gain, or share electrons to become a stable, noble gas 2 - correct answers How many electrons must be lost by a main group element to form a cation with a 2+ ionic charge? 82 - correct answers How many total electrons are present in the polyatomic ion, hydrogen phosphate HPO42-? Ca^2+ - correct answers What is the ion symbol for an atom with twenty protons and eighteen electrons c.) Iron and chlorine - correct answers Which of the following pa...

what happens to the KE of a moving bus as it comes to stop? - correct answers it is converted into heat an example of an endothermic process is: A.) digestion of food B.) burning of coal C.) melting of ice D.) all of the above - correct answers C in an experiment, if the initial temperature is 72.1C and the final temperature is 26.9C, what is the temperature change for this experiment? - correct answers -45.2C in which of the following is energy (heat) released? A.) evaporation of ...

Protons and Neutrons make up the? - correct answers Nucleus Masses and charges are? - correct answers Subatomic Particles Mass (kg): 1.67262 x 10^-27 Mass (amu): 1.0073 Charge: 1+ - correct answers Proton Mass (kg): 1.67493 x 10^-27 Mass (amu): 1.0087 Charge: 0 - correct answers Neutron Mass (kg): 0.00091 x 10^-27 Mass (amu): 0.00055 Charge: 1- - correct answers Electron Left side of the periodic table, makes up 75% of the periodic table - correct answers Metals Occupy up...

polar covalent bond - correct answers anything from 0.4-1.9 (arrow on polar points to highest electronegativity) polar bonds - correct answers covalent bonds with uneven distributions of electrons chemical reactions - correct answers reactants (starting substance) -> products (new substance) electronegativity - correct answers the ability of an atom to attract electrons in a covalent bond. ~greater difference in value makes it more polar ~atoms of equal electronegativity values do ...

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Jane is developing a care plan for Mr.Thomas.She wants to make sure that she includes not only physical needs but also psychological. She refers to Erikson's stages of development to help her in planning care.Which stage of development is Mr. Thomas in? - correct answers B. Generativity vs stagnation Mrs. Thomas tells Jane that her 5 year old son has been acting up since Mr. Thomas came from from the hospital.Jane tells Mrs. Thomas that her son is in the initiative vs guilt stage of develo...