1) In the equation 2 H2 + O2 → 2 H2O,A) H2, O2, and H2O room all compounds.B) H2, O2, and H2O are all elements.C) only H2O is a compound.D) just H2 and also O2 space compounds.

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2) What is the atomic mass of an atom that has 6 protons, 6 neutrons, and also 6 electrons?A) 6B) 8C) 12D) 18
3) an uncharged atom that boron has an atomic variety of 5 and an atom mass the 11. How numerous electrons does boron have?A) 11B) 15C) 5D) 2
4) Typically, nitrogen atoms are composed of electrons, protons, and also neutrons. One isotope the nitrogen couldA) be positive charged.B) be negatively charged.C) have an ext protons 보다 the normal nitrogen atom.D) have more neutrons 보다 the normal nitrogen atom.
When full, the innermost electron covering of argon contains ________ electrons, and also the outermost shell consists of ________ electrons.A) 2; 2B) 2; 8C) 4; 8D) 8; 8
What wake up to an atom if the electron in the outer shell are altered?A) The atom becomes radioactive.B) The atom disintegrates.C) The properties of the atom change.D) The atom"s attributes change, and it becomes a various element.
A(n) ________ forms when 2 atoms share electrons.A) ionB) covalent bondC) ionic bondD) hydrogen bond
A hydrogen atom has actually one electron. How many covalent bonds have the right to hydrogen form?A) oneB) twoC) fourD) none
Table salt is developed whenA) chlorine provides an electron come sodium.B) a hydrogen link forms in between sodium and also chlorine.C) sodium and chlorine share electron to type a bond.D) salt donates its single outer electron to chlorine.
10) What is the basic difference between covalent and ionic bonding?A) In a covalent bond, the partners share a pair that electrons; in an ionic bond, one partner accepts electron from the other.B) In covalent bonding, both partners end up with filled outer electron shells; in ionic bonding, one partner does and the other does not.C) Covalent bonding involves only the outermost electron shell; ionic bonding likewise involves the next electron covering inside the outermost shell.D) Covalent bonds kind between atom of the very same element; ionic bonds kind between atom of various elements.
Which that the adhering to statements concerning the oxygen atom that a water molecule is true?A) Oxygen is much more positively charged than the hydrogen atoms.B) Oxygen attracts electrons much less strongly than the hydrogen atoms.C) Oxygen is much more electronegative than the hydrogen atoms.D) Oxygen is attractive to the negative charged atom of various other molecules.
In a water molecule, hydrogen and also oxygen are hosted together through a ________ bond.A) twin covalentB) nonpolar covalentC) hydrogenD) polar covalent
A single water molecule (H—O—H) is hosted together byA) a single covalent bond.B) a dual covalent bond.C) two polar covalent bonds.D) hydrogen bonds.

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The hydrogen atom of a water molecule are bonded to the oxygen atom by ________ bonds, whereas neighboring water molecules are held together by ________ bonds.A) hydrogen; polar covalentB) polar covalent; hydrogenC) ionic; covalentD) polar covalent; ionic
Which the the adhering to statements ideal describes a compound?A) A compound is a pure element.B) A compound contains two or an ext different aspects in a fixed ratio.C) A link is exemplified by sodium.D) A compound is a solution.

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