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- 1. Multiple Choice
The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.disappearsstays the sameweighs lessexplodes - 2. Multiple ChoiceAn oreo cookie weighs 20 grams. It gets crushed into crumbs for a recipe. How much do its crumbs weigh?15 grams25 grams20 grams
- 3. Multiple ChoiceWhat is the Law of Conservation of mass?Mass is created in a chemical reactionMass is created in a physical changeNew chemicals formed from a chemical reaction have a larger overall mass than the original reactantsMass is never created or destroyed
- 4. Multiple ChoiceThe coefficient in 3H2O is6235
- 5. Multiple Choice
Which of the following are Subscripts in this Chemical Formula: 3Fe2O4
3,4
3,2
2,4
6
- 6. Multiple ChoiceHow many nitrogen atoms does NH3 have?1234
- 7. Multiple Choice
How many oxygen atoms are in this chemical formula?
6 oxygen atoms
2 oxygen atoms
3 oxygen atoms
4 oxygen atoms
- 8. Multiple Choice
Which Chemical Equation is Balanced?
Fe4+O2------4FeO2+O2
2H2+O2-----2H2O
3Cr+4O₂-----2Cr₂O₃
- 9. Multiple Choice
Which Chemical Equation is Balanced?
4O2 + 2H2 + S2------ 2H2SO4
4H2+O2-----2H2O2
3Cr+4O₂-----2Cr₂O₃
- 10. Multiple ChoiceHow many Sodium (Na) are in 6NaCl?1126
- Answer choicesTagsAnswer choicesTags