You are watching: Which subatomic particles contribute to an atom’s mass number but not its atomic number?
Answer:the atom mass of the corresponding atom Why:Note how the amount of the number of protons and also neutrons in the matching atomic frameworks is equal to the shown atomic mass.
Bonds between carbon and also hydrogen atoms (as illustrated on the ideal side that the figure) are generally ______.
Answer:nonpolar covalent bondsWhy:Neither carbon nor hydrogen is taken into consideration electronegative atoms. Therefore, neither atom has an overly strong pull on mutual electrons, and also those electron are mutual equally within a nonpolar covalent bond.
Answer:ionic bondWhy:An ionic bond is formed during the finish transfer the one or an ext electrons native one atom come another.
Answer:protons and also neutronsWhy:In a typical atom, the protons and neutrons "hang out" together in the facility of the atom—the nucleus. Electron are constantly found orbiting around the nucleus.
Answer:neutronsWhy:tomic number is the variety of protons in one atom, yet mass number is calculation by adding both the number of protons and also the variety of neutrons in an atom.
An atom the oxygen has an atomic variety of 8 and a mass variety of 18. How numerous of each type of subatomic bit does the contain?
Answer:8 protons, 8 electrons, and 10 neutronsWhy:The atom number is the variety of protons in an atom, and it will have actually the same variety of electrons, come balance the electrical charge. Fixed number is the variety of protons to add the number of neutrons, so subtracting atomic number from mass number discover the variety of neutrons. The number of protons and also electrons is consistent for every atoms of any element, but the variety of neutrons have the right to vary. Atoms of the same aspect that differ in the number of neutrons are dubbed isotopes.
Answer:falseWhy:The atomic number of any atom is equal to the variety of protons, no neutrons, in that nucleus.
Except for facets 1 and 2, all other aspects are steady with how countless electrons in your outermost (valence) power level?
Answer:8Why:Elements 1 and also 2 room stable v a preferably of 2 electrons in your outermost (valence) power level (electron shell). Every other elements are stable with eight electron in their valence shell.
Answer:an atom that has either got or shed electron(s)Why:Ions form when atoms get or lose electrons to obtain a full valence shell, which offers them an electric charge. Ions have the right to be stored in the body, together as ion of calcium and phosphate that room stored in ours bones, or can be easily accessible individually for numerous physiological processes. Because that example, Na+ is required for muscle contraction, nerve advertise conduction, and also regulation of blood pressure.
Answer:the outermost electronsWhy:In ionic bonding, the atoms" outermost electrons—the valence electrons—are closestly to every other and also will interact, which leads to shortcut formation.
Answer:Ions of opposite electrical charges room attracted to each various other to balance the charges. Why:Ions of opposite dues are attracted together to counter their charges. When they bond, they form an ionic link that have the right to store and transport the ions, or dissociate (separate), publication the ions, which can then be provided by the body.
Calcium"s atom number is 20. It develops ions with 18 electrons. What is the electric charge the a calcium ion?
Answer:+2Why:With atomic number 20, calcium atoms have 20 hopeful protons, and the ion has only 18 electrons, which means the net fee is +2. Calcium ions are crucial for muscle contractions, nerve impulses, and bone maintenance.
Answer:neutronsWhy:Note the these atoms every contain one proton, and also are because of this variations that the same element that every differ in the variety of neutrons.
Answer:the bond created when common electrons occupy a single orbital usual to both atoms within a molecule Why:Electron sharing produces molecules in i beg your pardon the mutual electrons accounting a solitary orbital typical to both atoms, which constitutes a covalent bond.
Answer:oxygenWhy:Oxygen and also sulfur both have actually six electron in their valence (outermost) electron shells. Therefore, they will form similar species and number of bond with various other atoms.
Answer:carbon, oxygen, hydrogen, and nitrogen. Why:Four elements: carbon, oxygen, hydrogen, and nitrogen do up about 96 percent of our human body weight; 20 rather are current in the body, part in map amounts.
Answer:falseWhy:Polar molecules room the an outcome of unlike electron pair sharing. Nonpolar molecules room electrically balanced due come the equal sharing the electrons in between the atom of the molecules.
An aspect has an atomic variety of 17 and a fixed of 35. How plenty of protons, neutrons, and electrons does the element have?
Answer:17 protons, 18 neutrons, and 17 electrons Why:The massive number is the sum of protons and also neutrons in the atom. The atomic number is the variety of protons in the atom. The number of protons equals the variety of electrons in a chemically inactive atom.
Answer:falseWhy:Organic compounds room covalently bonded and also they always contain carbon; they frequently contain oxygen as well.
Answer:oxygen gasWhy:Oxygen is a molecule because it consists of the element oxygen only. The other selections are molecules of compounds since they contain two or much more different type of elements.
Answer:4 amuWhy:The helium atom shown contains two protons and also two neutrons which add to a full mass of 4 amu. The 2 electrons execute not add to the determination of atom mass.
Which of the adhering to forms of power travels in varying wavelengths, such together visible light, infrared waves, radio waves, ultraviolet waves, and X-rays?
Answer:electromagnetic energyWhy:Radiant energy, or electromagnetic energy, travel in waves. This waves, which vary in length, are collectively called the electromagnetic spectrum. They encompass visible light, infrared waves, radio waves, ultraviolet waves, and also X rays.
Answer:falseWhy:Colloids, not suspensions may additionally be dubbed emulsions. Colloids space heterogeneous mixtures, meaning their ingredient is dissimilar in different locations of the mixture. Colloids often show up translucent or milky and also although the solute particles are bigger than those in true solutions, castle still perform not work out out. Suspensions room heterogeneous mixtures through large, frequently visible solutes that have tendency to clear up out.
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Which the the following is formed once the ion in the salt crystal have completely dissociated from one another?
Answer:a solutionWhy:Once dissociated, the sodium and also chloride ions would certainly be supposed to disperse uniformly amongst the surrounding water molecules. This homogenous mixture is dubbed a solution.