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Define matter
Anything that has mass and takes up space (volume)
What physical property is different on the moon than it would be on Earth?
Weight
Would an astronaut have the same weight and mass in space as she does on Earth? Why or why not?
No, because mass (the amount of matter in an object) stays the same wherever you are, but weight depends on the gravitational pull of your location.
Why do we say your ice cream is moving?
Because particles (atoms and molecules) whether in a solid, liquid, or gas are also moving.
Define mass
The amount of matter in an object
What physical property directly measures force?
Weight (the force of the gravity on the object)
How would you draw the particles for each state of matter?
Liquid; slowly gliding past one another
Solid; side by side vibrating in place
Gas; wildly bouncing all around and off of one another
How are mass and gravitational pull related.
The greater the mass of an object the greater its gravitational pull.
What is displacement?
When you use the displacement of water in a graduated cylinder to find the volume of an irregularly shaped object.
What is the formula for finding volume of a regular rectangular type object?
length x width x height
A mystery substance has a mass of 140g and a volume of 37cm3. What is the density of the mystery substance?
3.8 g/cm3
If the graduated cylinder read 40 mL and we dropped in a rock and saw that the graduated cylinder was now at 75 mL - what is the volume of the rock we placed in the water?
35 mL
As the particles cool, they stay packed together vibrating in place keeping the new shape (as a solid)
The mass of a piece of metal is 12.6g and the volume is 2.2cm3. What is the density?
5.7 g/cm3
Why would one type of fruit float in water while another type of fruit sank?
One fruit was more (it sank) dense than the water while the other was less (it floated) dense.
Explain the movement of the particles in an ice pop as it goes from frozen to melted.
While frozen the particles are all together and vibrating in place. As it melts the particles spread apart which causes the ice pop to lose its shape.
If you put a sealed plastic bottle in the fridge and came back to find it partially dented in - how can you explain what happened?
The particles slowed down due to the lower temperature and therefore got closer together.
If someone makes a claim that a ring can improve your balance and shares information from other friends, why would a scientist question this claim?
Because it is based on personal stories and no scientific evidence.
If your data in an experiment demonstrates the opposite of your original hypothesis what should you do next?
Revise the hypothesis based on the evidence and test again.
A rover lands on a planet that has the pull of gravity as Earth. What effect does this have on the rover's weight and mass?
Weight would be reduced to half of what it is on Earth while its mass remains the same.
Given a table with the mass of three different mineral samples (a - 9.5g, b - 25 g, c - 9g) and you conduct a displacement test to find they all have the same volume. You know two of the samples are quartz and one is limestone and you know that limestone has a lower density; which sample would be limestone?
Sample C; because if they all have the same volume the mineral with the lowest mass would have the lower density and therefore be limestone. Remember, density = mass/volume
Mineral Mass Volume
Halite 43.2g 20.0cm3
Quartz 53.1g 20.0cm3
Pyrite 100.4g 20.0cm3
List the minerals from greatest to least density
Pyrite, Quartz, Halite
material shape density L W H
Gold(Au) cube 2.7g/cm3 3cm 3cm 3cm
Copper (Cu) cube 8.9g/cm3 3cm 3cm 3cm
What can you observe about the two cubes?
They have the same volume since they have the same length, width, and height. Since they have the same volume then copper would be denser than gold.
What is the core principle of the scientific theory of atoms?
That all matter consists of atoms
What is malleability and brittleness and how are they different?
malleability is a physical property that describes a material's ability to be hammered, rolled, or pressed into thin sheets without shattering. While brittle is a physical property that describes solids—like glass, chalk, or ceramics—that will fracture or shatter immediately when force is applied.