Counting Elements and Atoms, Law of COM, Chemistry Review

Question 1

What is the atomic number for this atom?

Accepted Answer

6

Question 2

Metals are found:

Accepted Answer

To the left of the stairstep line

Question 3

How many elements are in this compound: Ba(OH)

Accepted Answer

3

Question 4

If 4g of Oxygen react with 12g of Hydrogen, how much H2O is produced? 2 H2 + O2 -------> 2H2O

Accepted Answer

16g

Question 5

Number of different elements, (NH4)2SO4?

Accepted Answer

4

Question 6

Which two formulas contain 4 atoms of hydrogen?

Accepted Answer

C2H4O2, 2H2CO3

Question 7

Number of different elements, 2Zn(NO3)2?

Accepted Answer

3

Question 8

Hydrogen is a:

Accepted Answer

Non-metal

Question 9

In the following equation, what are the reactant(s)? 2 H2 + O2 -------> 2H2O

Accepted Answer

2H2 + O2

Question 10

Number of oxygen atoms, C12H22O11?

Accepted Answer

11

Question 11

Number of hydrogen atoms, C12H22O11?

Accepted Answer

22

Question 12

Number of total atoms, (NH4)2SO4?

Accepted Answer

15

Question 13

Number of nitrogen atoms, (NH4)2SO4?

Accepted Answer

2

Question 14

Which of the following compounds is organic?

Accepted Answer

CH4

Question 15

Which of the following is a molecule, but not a compound?

Accepted Answer

N2

Question 16

What element is this?

Accepted Answer

Lithium

Question 17

Number of total atoms, C12H22O11?

Accepted Answer

45

Question 18

Number of different elements, C12H22O11?

Accepted Answer

3

Question 19

What is the identity of the atom?

Accepted Answer

Protons

Question 20

Coefficient number, 3Zn(NO3)2?

Accepted Answer

3

Question 21

Which of the following is NOT a property of metals?

Accepted Answer

Brittle

Question 22

What element is this?

Accepted Answer

Carbon

Question 23

What determines the reactivity of an atom?

Accepted Answer

Valence Electrons

Question 24

How many total atoms are in the chemical compound, NH3?

Accepted Answer

4

Question 25

Number of oxygen atoms, (NH4)2SO4?

Accepted Answer

4

Counting Elements and Atoms, Law of COM, Chemistry Review

Questions 25

Counting Elements and Atoms, Law of COM, Chemistry Review

Questions 25