Font size
Worksheets1.1 Review Elements and Compounds
Total questions: 15
Worksheet time: 17mins
Based on the chemical formula, which statement best describes NI₃?
Based on the chemical formula, there are 3 atoms in one molecule of NI₃.
Based on the chemical formula, there are 6 atoms in one molecule of NI₃.
Based on the chemical formula, NI₃ is composed of atoms of the same elements.
Based on the chemical formula, NI₃ is composed of atoms of different elements.
Which of the following statements best compares the two images?
Images A and B are both compounds because they have more than one atom.
Image A is a compound because it has different types of atoms, and image B is an element because it has one type of atom.
Image A is an element because it has one type of atom, and image B is a compound because it has different types of atoms.
Images A and B are both elements because they have more than one atom.
Which of the following is true regarding aluminum fluoride?
A. Aluminum fluoride contains 3 atoms of aluminum and 3 atoms of fluorine.
B. Aluminum fluoride contains 1 atom of aluminum and 1 atom of fluorine.
C. Aluminum fluoride contains 1 atom of aluminum and 3 atoms of fluorine.
D. Aluminum fluoride contains 3 atoms of aluminum and 1 atom of fluorine.
Examine this list of molecules.
1. Cl2
2. NaCl
3. FeO
4. HCl
5. NH
6. O2
Classify these molecules as either elements or compounds and explain why they fit into each category.
Which of the following best identifies two similarities and one difference between the two chemical formulas, with evidence from the table?
Which of these molecules represent compounds? Select all that apply.
H₂O
H₂
CO
CO₂
S₈
Match each chemical name to its formula
H2O
Water
C6H12O6
Glucose
CO2
Carbon dioxide
O2
Oxygen
How many hydrogen atoms are there?
1
4
5
6
What is the chemical formula for this molecule?
H2O
CO2
CO
C2O
According to the Chemical Compounds table, how many atoms of hydrogen are in glucose?
(a)
The names and chemical formulas of four substances are shown in the chart. Which substance listed in the chart is made up of the most atoms?
Carbonic acid
Nitric acid
Phosphoric acid
Sulfuric acid
