5 Written Questions
5 Matching Questions
- law of conservation of mass
- chemical property
- vinegar, pop, mayonaise, jello, kool-aid
- The mass of all materials used IN a change to start with are equal to the mass of all the materials that are created or what you end with
- Physical change - rocks are broken into smaller/different pieces, but they are still rocks; chemical change - substances dissolve in water and react with other substances in the soil, air, or water making new substances
- a Name two examples of homogeneous mixtures.
- b Explain how the law of conservation of mass applies to a chemical change.
- c Matter is neither created nor destroyed during a change, but is simply changed from one form to another form
- d charateristics of a substance that indicates whether it can undergo a certain chemical change
- e What type of change is weathering and why?
5 Multiple Choice Questions
- How many elements are there total?
- heterogeneous mixture containing a liquid in which visible particles are large enough to settle out (insoluble). Which type of mixture has large solute, so it can be filtered out?
- Name three clues that a chemical change has occurred.
- mixture in which particles are larger than those in a solution but are NOT heavy enough to settle out. Which type of mixture has solute small enough, so it can't be filtered out?
- unable to be dissolved
5 True/False Questions
centrifuge → device that spins liquids at high speeds to separate it into parts based on densities
element → Type of pure substance that have atoms that have the same identity (one type of atom)
sifting, magnetism, distillation, centrifuge, physical removal, filtration → Name two compounds.
solvent → Type of pure substance that have atoms that have the same identity (one type of atom)
mass → amount of particles in an object