Question 1

What is the name of number in a chemical formula that tells how many atoms are in a molecule?

Accepted Answer

Subscripts

Answer

Atomic number

Answer

Mass number

Answer

Coefficients

Question 2

What will form when two or more atoms share one or more pairs of electrons?

Accepted Answer

Covalent compound

Answer

Chemical formula

Answer

Ionic compound

Answer

Compound

Question 3

What is the set of symbols that shows the elements and the ratio of atoms found in a substance?

Accepted Answer

Chemical formula

Answer

Covalent compound

Answer

Ionic compound

Answer

Structural formula

Question 4

What will form when a positively charged ion and a negatively charged ion bond together?

Accepted Answer

Ionic compound

Answer

Binary compound

Answer

Covalent compound

Answer

Ternary compound

Question 5

What is the substance that is composed of two or more different elements joined by a chemical bond?

Accepted Answer

Compound

Answer

Covalent bond

Answer

Chemical bond

Answer

Ionic bond

Question 6

What is a charged atom called?

Accepted Answer

Ion

Answer

Isotopes

Answer

Molecule

Answer

Element

Question 7

What is the formula that gives the simplest whole-number ratio of atoms in a compound?

Accepted Answer

Empirical Formula

Answer

Chemical Formula

Answer

Structural Formula

Answer

Molecular Formula

Question 8

Which of the following best describe valence electrons?

Accepted Answer

These are the electrons that are found in the outermost shell of an atom.

Answer

The electrons found near the center of the nucleus.

Answer

It is often called backscattered electrons.

Answer

The electrons of atoms that participate in the formation of chemical bonds.

Question 9

Which of the following statement is FALSE?

Accepted Answer

Molecular formula is the simplest whole number ratio of atoms in a compound.

Answer

Empirical formula tells us the exact number of atoms in a compound.

Answer

Structural formula shows the arrangement and bonds of atoms within the molecule.

Answer

Chemical formula tells us the number of molecules in a compound.

Question 10

What is the formula that gives the actual number of atoms of each element in a compound?

Accepted Answer

Molecular formula

Answer

Structural formula

Answer

Empirical formula

Answer

Chemical formula

Question 11

The formula NaCl is an example of a/an __________________formula.

Accepted Answer

empirical

Answer

both A and B is correct

Answer

molecular

Answer

structural

Question 12

Which of the following is the correct structural formula of CO₂?

Accepted Answer

O=C=O

Answer

C2O

Answer

CO

Answer

O2

Question 13

The chemical formula of glucose (C6H12O6) is an example of a/an __________________formula.

Accepted Answer

molecular

Answer

empirical

Answer

both A and B is correct

Answer

structural

Question 14

The correct name of this formula, H2O, is _______________.

Accepted Answer

dihydrogen oxide

Answer

oxygen hydride

Answer

none of the above

Answer

hydrogen oxide

Question 15

What is the empirical formula of C6H12?

Accepted Answer

CH2

Answer

C6H12

Answer

C2H4

Answer

C3H6

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