1) Which object FLOATS? a) apple b) fork 2) Which object SINKS? a) apple b) fork 3) Which object SINKS? a) b) scissors 4) Which object FLOATS? a) plastic bottle b) coin 5) The apple floats because...  a) it is LESS dense b) it is MORE dense 6) The fork sinks because... a) The fork is LESS dense. b) The fork is MORE dense. 7) Density is the amount of ______________ in an amount of space. a) MATTER b) VOLUME 8) How do you calculate density?  a) mass x volume (mass multiplied by volume) b) volume + mass (add volume and mass) c) mass / volume (mass divided by volume) d) mass - volume (subtract volume from mass) 9) Which is more dense? a) 1st square (blue) b) 2nd square (green) 10) Something with the same volume but different mass have _______________ density.  a) different  b) the same 11) Two substances with same density might be the ____________ substance. For example, if a spoon and ring each have a density of 10.49 g/cm³, both substances might be silver.³ a) different. b) same  12) One block is silver and one block is aluminum. How can we identify which substance is silver using density? a) Look at both objects b) Measure mass and volume and calculate density  c) 1. Measure mass and volume to calculate density 2. Compare using density table 13) What substance is most dense?  a) silver (10.49 g/cm³) b) gold (19.3 g/cm³) c) aluminum (2.7 g/cm³) d) copper (9 g/cm³) 14) Look at the picture. How does the density of air compare to the density of the helium-filled balloons (rising to ceiling)? a) the helium balloons are less dense than the air b) the helium balloons are more dense  c) the helium balloons have the same density as the air 15) Which student best shows the density of metal spoon compared to the plastic spoon? a) Student 1 b) Student 2 c) Student 3 16) Which model accurately represents the final position of each substance in the density column? a) b) 17) What is one pattern you noticed while observing density? a) if a substance has more density, it will float b) gases are more dense than solids c) the density of a solid is always greater than 10g/mL d) If a substance has more density, it will sink 18) Which fishbowl is more DENSEly populated? a) A b) B 19) Which is less dense? a) honey b) water c) lamp oil d) milk

Understanding Density

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