Investigation 1:
Water in Three States
Water in Three States
What state of matter is vinegar?
Liquid
Which is more accurate: estimating or measuring?
Measuring
Which is more dense: ice or liquid water?
Water is more dense because it sinks to the bottom of vegetable oil, but ice floats in vegetable oil.
In our lab, did the heaviest object sink?
No, the heaviest object (the white bucket) floated.
What is buoyancy?
Buoyancy is something's ability to float.
What is a liquid?
A state of matter that can be poured and takes the shape of its container
Joe had a glass of iced tea. If he added 2 lemon slices to his glass, what would happen to the volume in his glass?
The volume would increase, or go up.
Which property of matter determines floating and sinking?
A. Weight
B. Density
C. Color
D. Volume
B. Density
In our lab, did the lightest object float?
No, the lightest object (the brass fastener) sank.
Can the buoyancy of an object be changed? If so, give an example.
Yes. We changed the buoyancy of clay by forming a bowl shape. We changed the buoyancy of the falcon tube by filling it with water and metal nuts. We changed the buoyancy of the weigh dish by adding metal weights to it.
What state of matter is ice?
Solid
How many milliliters are in a liter?
1,000 mL in a liter
Mike tested four objects to see if they would float or sink. Object 1 floats. Object 2 sinks. Object 3 sinks. Object 4 sinks. Which object is less dense than water?
Object 1 is less dense than water because it floats.
Are weight and density the same thing?
No. Density is how tightly packed the particles in a substance are. Weight is a measure of how heavy an object is.
What is an object that needs to be buoyant? What is an object that should not be buoyant?
Things that need to be buoyant are: rafts, floats, boats, and buoys. Things that should not be buoyant are anchors and diving sticks.
What is the change in matter when ice turns to water?
Melting
What is the definition of volume?
The amount of space that matter occupies
In a very dense object, are the particles more tightly packed or less tightly packed?
The particles in a dense object are more tightly packed (closer together).
Which statement is true about weight?
A. Light objects float in water
B. Heavy objects sink in water
C. Weight is not the same as density
D. Weight determines volume
C. Weight is NOT the same as density
Is air more dense or less dense than water? How do you know?
Air is less dense than water. Adding air to an object can make it float.
What is the change in matter when water turns to water vapor?
Evaporation
Mary has 20 mL of water in a graduated cylinder. She puts a rock into the cylinder. Now, the volume in the cylinder is 27 mL. What is the volume of the rock?
The rock is 7 mL, because 20 + 7 = 27.
Laura tested a ping pong ball and a kidney bean in water. The ping pong ball floated, and the kidney bean sank. What can she conclude form this information?
A. The ping pong ball has less volume than the kidney bean.
B. The ping pong ball is less buoyant than the kidney bean.
C. The ping pong ball weighs less than the kidney bean.
D. The ping pong ball is less dense than the kidney bean.
D. The ping pong ball is less dense than the kidney bean.
Penny wants to know the volume of milk in her drinking glass. What can she use to measure volume?
A. Pan Balance
B. Scale
C. Graduated Cylinder
D. Metric Ruler
C. Graduated Cylinder
Eric placed a falcon tube in water and it floated. He filled the falcon tube with water and it sank. What property of the falcon tube did he change? (Choose the best answer.)
A. Weight
B. Buoyancy
C. Density
D. Volume
B. Buoyancy (He changed its ability to float!)