3. How will you separate oil from water? * a.evaporation b.decantation c.filtration d.distillation 4. In which glass of liquid is sugar hard to dissolve? * 2 points a.in a glass of iced tea b.in a glass of hot water c.in a glass of tap water d.in a glass of cold water 5. Which of the following is considered a colloid? * 2 points
a mixture of oil and water a mixture of salt and iron filings a mixture of soil and water a mixture of chalk and water 6. Which of the following will dissolve in water? * 2 points oil salt alcohol sand 7. Which of these will not form a solution? * 2 points preparing syrup preparing a cup of tea mixing ice cubes in water stirring a spoonful of sugar in water 8. You prepared an orange juice drink by pouring 1/3 concentrated juice and 3/4 water into the glass. You found out that the mixture is very sweet and not good to drink. What will you do? * 2 points Add more water to glass
Add more concentrated juice to the glass
transfer the mixture in a bigger container and add more sugar
transfer the mixture to a bigger container and add more water
9. Which is the best way to get salt from seawater? *
2 points
evaporation
distillation
filtration
decantation
10. Which is the correct order for obtaining salt from a mixture of sand and salt? *
