1) Density is _____________________________________- a) chemical characteristic property b) physical characteristic property 2) Density measures the amount of ______________ in a certain amount of __________. a) MATTER in a certain amount of SPACE b) VOLUME in a certain amount of LIQUIDS c) BALLOONS in a certain amount of GAS 3) 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) 4) Which model shows the object with a greater density? a) 1st square (blue) b) 2nd square (green) 5) Objects with the same volume but different mass have _______________ density.  a) different  b) the same 6) 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) the same 7) 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 8) 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) 9) 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 10) Which student best shows the density of metal spoon compared to the plastic spoon? a) Student 1 b) Student 2 c) Student 3 11) Which model accurately represent the atomic composition of each liquid in the density column? a) b) 12) Which model accurately represents the final position of each substance in the density column? a) b) 13) Does the student's model show miscible or immiscible liquids? a) miscible - they mix together b) immiscible - they form distinct layers 14) The student shakes the salad dressing bottle and draws a new model. Does the student's model show miscible or immiscible liquids? a) miscible - they mix together b) immiscible - they form distinct layers 15) How can we use density to make predictions about substances and objects in real life? a) we can predict if something will go fast or slow b) we can predict if something will sink or float c) we can predict if something will be shiny or colorful 16) 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

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