Answer: A solitary covalent shortcut is formed in between carbon and each that the 4 hydrogen atoms. Why:Carbon shares a pair of electrons v each that the four hydrogen atoms. A pair of common electrons is the communication of a single covalent bond.

You are watching: Which subatomic particles contribute to an atom’s mass number but not its atomic number?


Answer:the atom mass that the equivalent atom Why:Note how the amount of the number of protons and also neutrons in the corresponding atomic structures is equal to the suggested atomic mass.
Bonds in between carbon and hydrogen atom (as shown on the appropriate side of the figure) are generally ______.
Answer:nonpolar covalent bondsWhy:Neither carbon nor hydrogen is thought about electronegative atoms. Therefore, neither atom has actually an overly solid pull on common electrons, and those electron are common equally in ~ a nonpolar covalent bond.
Answer:ionic bondWhy:An ionic shortcut is formed during the finish transfer of one or much more electrons from one atom to another.
Answer:protons and also neutronsWhy:In a typical atom, the protons and neutrons "hang out" with each other in the center of the atom—the nucleus. Electrons are constantly found orbiting around the nucleus.
Answer:neutronsWhy:tomic number is the variety of protons in an atom, however mass number is calculate by adding both the variety of protons and the variety of neutrons in one atom.
An atom the oxygen has an atomic variety of 8 and a mass variety of 18. How numerous of each form of subatomic particle does that contain?
Answer:8 protons, 8 electrons, and 10 neutronsWhy:The atom number is the number of protons in an atom, and also it will have the same number of electrons, to balance the electric charge. Fixed number is the variety of protons plus the variety of neutrons, therefore subtracting atom number indigenous mass number discover the variety of neutrons. The variety of protons and also electrons is continuous for all atoms of any element, but the number of neutrons deserve to vary. Atoms of the same facet that differ in the variety of neutrons are dubbed isotopes.
Answer:falseWhy:The atomic number of any atom is equal to the number of protons, no neutrons, in its nucleus.
Except for elements 1 and 2, every other elements are secure with how numerous electrons in your outermost (valence) power level?
Answer:8Why:Elements 1 and 2 room stable v a maximum of two electrons in their outermost (valence) energy level (electron shell). Every other facets are secure with eight electrons in their valence shell.
Answer:an atom that has actually either obtained or shed electron(s)Why:Ions kind when atoms obtain or shed electrons to obtain a complete valence shell, which provides them an electrical charge. Ions deserve to be stored in the body, such as ion of calcium and also phosphate that space stored in ours bones, or deserve to be obtainable individually for plenty of physiological processes. For example, Na+ is compelled for muscle contraction, nerve impulse conduction, and also regulation that blood pressure.
Answer:the outermost electronsWhy:In ionic bonding, the atoms" outermost electrons—the valence electrons—are closest to each other and also will interact, which leader to link formation.
Answer:Ions that opposite electrical charges room attracted to each various other to balance the charges. Why:Ions of opposite dues are drawn together to offset their charges. As soon as they bond, they type an ionic compound that deserve to store and also transport the ions, or dissociate (separate), release the ions, which deserve to then be offered by the body.
Calcium"s atomic number is 20. It creates ions v 18 electrons. What is the electrical charge the a calcium ion?
Answer:+2Why:With atomic number 20, calcium atoms have 20 confident protons, and the ion has actually only 18 electrons, which method the net fee is +2. Calcium ion are essential for muscle contractions, nerve impulses, and also bone maintenance.
Answer:neutronsWhy:Note that these atoms every contain one proton, and also are because of this variations the the same element that every differ in the number of neutrons.
Answer:the bond developed when common electrons occupy a solitary orbital typical to both atoms within a molecule Why:Electron share produces molecules in which the mutual electrons accounting a single orbital typical to both atoms, i beg your pardon constitutes a covalent bond.
Answer:oxygenWhy:Oxygen and also sulfur both have actually six electron in their valence (outermost) electron shells. Therefore, lock will kind similar types and number of binding with various other atoms.
Answer:carbon, oxygen, hydrogen, and also nitrogen. Why:Four elements: carbon, oxygen, hydrogen, and also nitrogen make up about 96 percent of our human body weight; 20 others are present in the body, some in trace amounts.
Answer:falseWhy:Polar molecules are the an outcome of unequal electron pair sharing. Nonpolar molecules are electrically balanced due to the same sharing of electrons between the atoms of the molecules.
An aspect has one atomic variety of 17 and also a fixed of 35. How numerous protons, neutrons, and electrons does the aspect have?
Answer:17 protons, 18 neutrons, and 17 electrons Why:The mass number is the amount of protons and also neutrons in the atom. The atomic number is the variety of protons in the atom. The number of protons equates to the variety of electrons in a chemically inactive atom.
Answer:falseWhy:Organic compounds are covalently bonded and they always contain carbon; they frequently contain oxygen together well.
Answer:oxygen gasWhy:Oxygen is a molecule since it is composed of the aspect oxygen only. The other options are molecule of compounds since they contain two or more different type of elements.
Answer:4 amuWhy:The helium atom shown contains two protons and two neutrons which contribute to a full mass that 4 amu. The two electrons do not contribute to the decision of atom mass.
Which of the following forms of power travels in differing wavelengths, such together visible light, infrared waves, radio waves, ultraviolet waves, and also X-rays?
Answer:electromagnetic energyWhy:Radiant energy, or electromagnetic energy, travels in waves. These waves, which vary in length, are collectively called the electromagnetic spectrum. They incorporate visible light, infrared waves, radio waves, ultraviolet waves, and also X rays.
Answer:falseWhy:Colloids, no suspensions may additionally be referred to as emulsions. Colloids space heterogeneous mixtures, meaning their composition is dissimilar in different locations of the mixture. Colloids often appear translucent or milky and also although the solute particles are bigger than those in true solutions, castle still do not work out out. Suspensions space heterogeneous mixtures with large, frequently visible solutes that have tendency to clear up out.

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Which that the complying with is created once the ion in the salt decision have totally dissociated native one another?
Answer:a solutionWhy:Once dissociated, the sodium and chloride ions would certainly be expected to disperse uniformly amongst the bordering water molecules. This homogenous mixture is called a solution.
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