FREE SCIENCE AND STUDY GAMES ABOUT MARTHA

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FREE SCIENCE AND STUDY GAMES ABOUT MARTHA

ROMERO EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -30 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Acids, bases, and salts belong to a large group of compounds called

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electrolytes.Question 2: Atoms with fewer than eight electrons in the outer energy level will attempt to lose, gain, or share electrons with other atoms to achieve stability. This tendency is called the

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octet rule Question 3: What decomposition reaction requires the addition of a water molecule to break a bond?

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hydrolysis

Question 4: The most abundant element essential to life is

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carbon.

Question 5: The total number of electrons in a neutral atom equals the number of:

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protons in its nucleus.Question 6: An atom can be described as chemically inert if its outermost electron shell contains _____ electrons.

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eight and two Question 7: What term is used to describe all of the chemical reactions that occur in body cells?

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metabolism Question 8: Chemical bonds formed by the sharing of electrons are called:

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covalent.

Question 9: A force holding two atoms together is a(n)

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chemical bond.

Question 10: Which subatomic particles carry a charge?

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Protons and electrons Question 11: As a result of which reaction during catabolism is a water molecule added to break a larger compound into smaller subunits?Correct!

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hydrolysis

Question 12: Hydrolysis _____ a water molecule.

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breaks down compounds by adding

Question 13: The type of chemical reaction most likely to require energy is a(n) _____ reaction.

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decomposition Question 14: A molecule that is polar:

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can form a hydrogen bond and has an unequal charge.Question 15: The water molecule has two distinct ends, each with a partial electrical charge.Because of this structure, water is said to be

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polar.

Question 16: Acids

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release hydrogen ions.Question 17: Ionic bonds are chemical bonds formed by the:

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transfer of electrons from one atom to another.Question 18: A weak acid: Correct!

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dissociates very little in solutio Question 19: Hydrogen bonds result from unequal charge distribution on a molecule. Such molecules are said to be

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polar.

Question 20: Which of the following is not a subatomic particle?

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Radon

Question 21: The atomic number tells you the

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number of protons in the nucleus.Question 22: Which type of chemical reaction results in the breakdown of a complex substance into two or more simpler substances?

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decomposition reaction Question 23: An element that contains the same number of protons but different numbers of neutrons is called a(n)

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isotope.Question 24: Electrolytes are:

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called cations if they have a positive charge.Question 25: As the concentration of hydroxide ions (OH-) increases, the:

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solution becomes more basic.and pH rises.Question 26: A chemical bond formed by the sharing of one or more pairs of electrons between the outer shells of two atoms is called a(n) _____ bond.

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covalent

Question 27: Salts

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a.can form as the result of a chemical reaction between acids and bases.

• are electrolytes.

• will form crystals if the water is removed.

• will form crystals if the water is removed.