Unit 2 evaluation Molecules, compounds, stoichiometry
Quiz by Jaime
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Measure skills
from any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
With a free account, teachers can
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
94 questions
Show answers
- Q1When elements combine to form compounds, their properties only change slightly. True or False?.FalseTrue30s
- Q2The properties of a compound are an average of the properties of the individual elements. True or False?FalseTrue30s
- Q3Life could not exist with just 91 elements if they did not combine to form compounds. True or False?FalseTrue30s
- Q4Although some substances we encounter in our routine lives are elements, most occur in the combined state. True or False?TrueFalse30s
- Q5The law of constant composition states: All samples of a given compound have the same proportions of their constituent elements. True or False?FalseTrue30s
- Q6The law of constant composition states: All samples of a given compound have the same proportions of their constituent elements. True or False?TrueFalse30s
- Q7The ratio in a chemical formula is a ratio of atoms, not a ratio of masses. True or False?TrueFalse30s
- Q8The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound. True or False?TrueFalse30s
- Q9The subscripts in a chemical formula do not change for a given compound. True or False?TrueFalse30s
- Q10Chemical formulas normally list the most metallic elements first. True or False?TrueFalse30s
- Q11The formula of a compound comprised of two nitrogen atoms and one oxygen atom should be written properly as ON2. True or False?FalseTrue30s
- Q12Molecular elements do not exist in nature. True or FalseFalseTrue30s
- Q13The element nitrogen normally exists in nature as a diatomic molecule. True or False?FalseTrue30s
- Q14If a chemical reaction produces the molecular element oxygen, the formula of oxygen should be written as O2 . True or False?FalseTrue30s
- Q15Carbon dioxide is an example of a molecular compound. True or False?TrueFalse30s