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    Chemistry
    Grade-9
    Easy

    Question

    Elements combine to form __________.

    1. Compound
    2. Atoms
    3. Positive ions
    4. Negative ions

    Hint:

    A compound is a combination of elements.

    The correct answer is: Compound

      • When elements of two or more types combine together they form a compound.
      • An atom is a particle of matter that uniquely defines a chemical element.
      • An atom is neutral with an equal number of protons and electrons, when an electron is lost it becomes a positively charged ion.
      • When an atom gains an electron it becomes negatively charged.

      Related Questions to study

      Grade-9
      Chemistry

      A chemical bond resulting from the electrostatic attraction between the positive and the negative ions is called_________.

      1. Covalent bond.
      2. Ionic bond.
      3. Charged bond.
      4. Dipole bond.

      A chemical bond resulting from the electrostatic attraction between the positive and the negative ions is called_________.

      ChemistryGrade-9
      1. Covalent bond.
      2. Ionic bond.
      3. Charged bond.
      4. Dipole bond.
      Grade-9
      Chemistry

      What is this compound?

      1. Ionic
      2. Covalent
      3. Dative
      4. All the above

      What is this compound?

      ChemistryGrade-9
      1. Ionic
      2. Covalent
      3. Dative
      4. All the above
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      Is this compound ionic or covalent?

      1. Ionic
      2. Covalent
      3. Both A and B
      4. None of the above

      Is this compound ionic or covalent?

      ChemistryGrade-9
      1. Ionic
      2. Covalent
      3. Both A and B
      4. None of the above
      parallel
      Grade-9
      Chemistry

      Which of the following BEST describes the ionic bonds?

      1. Bond held together by a sea of electrons
      2. Bond of two ions of opposite charges held together by electrostatic forces
      3. Bond held together by the sharing of electrons
      4. Bond between hydrogen and an anion or polyatomic ion.

      Which of the following BEST describes the ionic bonds?

      ChemistryGrade-9
      1. Bond held together by a sea of electrons
      2. Bond of two ions of opposite charges held together by electrostatic forces
      3. Bond held together by the sharing of electrons
      4. Bond between hydrogen and an anion or polyatomic ion.
      Grade-9
      Chemistry

      Nonmetals form ____ by ____ electrons.

      1. Cations, gaining
      2. Cations, losing
      3. Anions, gaining
      4. Anions, losing

      Nonmetals form ____ by ____ electrons.

      ChemistryGrade-9
      1. Cations, gaining
      2. Cations, losing
      3. Anions, gaining
      4. Anions, losing
      Grade-9
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      Which is the correct formula for sodium chloride?

      1. SoCl
      2. SdCl
      3. NaCl
      4. NaCl2

      Which is the correct formula for sodium chloride?

      ChemistryGrade-9
      1. SoCl
      2. SdCl
      3. NaCl
      4. NaCl2
      parallel
      Grade-9
      Chemistry

      When an ionic compound is formed, its charge is:

      1. Negative
      2. Neutral (no charge)
      3. Positive
      4. None of the above

      When an ionic compound is formed, its charge is:

      ChemistryGrade-9
      1. Negative
      2. Neutral (no charge)
      3. Positive
      4. None of the above
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      Chemistry

      When metals bond with nonmetals they form what type of bonds? 

      1. Covalent
      2. Ionic
      3. Cooperative
      4. Lewis

      When metals bond with nonmetals they form what type of bonds? 

      ChemistryGrade-9
      1. Covalent
      2. Ionic
      3. Cooperative
      4. Lewis
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      Chemistry

      If I gain electrons I become______.

      1. Positive
      2. Negative
      3. Same
      4. Neutral

      If I gain electrons I become______.

      ChemistryGrade-9
      1. Positive
      2. Negative
      3. Same
      4. Neutral
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      Grade-9
      Chemistry

      If my charge becomes 2+, what does that say about me?

      1. I am stealing 2 electrons
      2. I am losing 2 electrons
      3. I am in period 2
      4. I have an atomic number of 2

      If my charge becomes 2+, what does that say about me?

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      1. I am stealing 2 electrons
      2. I am losing 2 electrons
      3. I am in period 2
      4. I have an atomic number of 2
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      Metals tend to:

      1. Gain electrons
      2. Lose electrons
      3. Cation 
      4. Anion

      Metals tend to:

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      1. Gain electrons
      2. Lose electrons
      3. Cation 
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      Molecules:

      1. Have covalent bonds and are always polar
      2. Have covalent bonds and are always nonpolar
      3. Have covalent bonds and can be polar or nonpolar
      4. Have ionic bonds and are always polar

      Molecules:

      ChemistryGrade-9
      1. Have covalent bonds and are always polar
      2. Have covalent bonds and are always nonpolar
      3. Have covalent bonds and can be polar or nonpolar
      4. Have ionic bonds and are always polar
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      How many electrons are shared in a double bond?

      1. 1
      2. 2
      3. 4
      4. 6


      How many electrons are shared in a double bond?

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      1. 1
      2. 2
      3. 4
      4. 6
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      The true statement among the following is:

      1. The ionic compounds are not highly soluble in polar solvents
      2. The covalent compounds are highly soluble in polar solvents
      3. The ionic compounds are highly soluble in polar solvents
      4. The ionic and covalent compounds are equally soluble in polar solvents

      The true statement among the following is:

      ChemistryGrade-9
      1. The ionic compounds are not highly soluble in polar solvents
      2. The covalent compounds are highly soluble in polar solvents
      3. The ionic compounds are highly soluble in polar solvents
      4. The ionic and covalent compounds are equally soluble in polar solvents
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      Low melting point and low solubility in water are general properties of ______________________ compounds.

      1. Ionic
      2. Covalent
      3. Chemical
      4. Glucose

      Low melting point and low solubility in water are general properties of ______________________ compounds.

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      1. Ionic
      2. Covalent
      3. Chemical
      4. Glucose
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