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- 1. Multiple Choice
Molecules are tightly packed togethersolidliquidgas - 2. Multiple ChoiceA chemical change happens when...a substance is changed at the atomic levelbonds are broken and formeda new substance is madeall of the above!
- 3. Multiple ChoiceWhich of the following reactions is a combustion reaction ?MgCO3 + O2 → MgO + CO2C3H8 + 5O2 → 3CO2 + 4H2O6CO2 + 6H2O → C6H12O6 + 6O26CO2 + 6H2O → C6H12O6 + 6O2
- 4. Multiple ChoiceAnything that has mass and takes up space is calledvolume
volumemattermagnetismelectricity - 5. Multiple ChoiceWhich substance is most likely classified as a colloid?soft drinkoxygen gaswaterfog
- 6. Multiple ChoiceWhich compound results from covalent bonding?NH4ClK2SO4NaClC6H12O6
- 7. Multiple ChoiceWhich compound will most likely be formed when lithium (Li) and nitrogen (N) are chemically combined?LiNLi3NLiN3Li3N3
- 8. Multiple ChoiceWhat makes something radioactive?elements with an atomic number above 81an unstable nucleuscontaminated sewageIt decays over time
- 9. Multiple Choice
The process of splitting of the molecules into ions of an electrolyte is called..
ionization
electrolysis
solvation
protonation
- 10. Multiple Choice
Colour of CuSO4 solution is
green
blue
red
yellow
- Answer choicesTagsAnswer choicesTags