Show:
What's Matter
Length & Volume
Mass & Density
Physical Changes?
Chemical Changes?
100
What are 5 examples of matter?
ANYTHING!!!!
100
Volume is the....
amount of space something takes up
100
Mass is the.....
amount of matter something has
100
What is the most important physical property?
THE STATES OF MATTER!
100
A chemical change is known to do what?
CHANGE OBJECT TO DIFFERENT MATTER
200
What is the shape and volume like for a solid? Liquid? Gas?
1. definite shape/volume 2. not definite shape/definite volume 3. indefinite shape/volume
200
What is the basic unit for LENGTH?
Meter!
200
What do I use to find the mass of an object? What do I use to see if something has MORE mass than the other?
a scale, a balance
200
Give me 3 examples of physical change.
1. painted wall 2. broken glass 3. cutting bread
200
What are 3 examples of chemical Change?
1. baking cake 2. burning tree 3. tarnishing/rusting
300
Give me an example of mixture and solution. Explain both!
mixture- salad (can be easily separated and seen clearly) solution- koolaid (can't be seen easily because dissolved)
300
How many meters in a kilometer? How many centimeters in a meter?
1000 m = 1 km 100 cm= 1 m
300
What is the basic unit for mass? What would I use to check the mass of a bike?
gram, kilogram
300
The reason why we know something is a physical change is because.....
IT'S NOT CHANGED TO A DIFFERENT TYPE OF MATTER
300
Why is digestion or baking a cake a chemical change?
because it's not the same thing at the START and END.
400
What are physical properties? Give me 2 examples.
shape, color, size, state of matter of object red notebook, tall person
400
What unit would I use to measure a person's length? What object do I use?
the meter! Use a meter stick
400
What is the definition of density?
it is the amount of mass in a given volume.
400
To go from a solid to a liquid, ice needs to melt. What does that mean about ENERGY? what is the MELTING POINT?
ENERGY is gained so particles can move FASTER and MELT Melting point = 0 degrees celcius
400
Where do we see rusting and tarnishing?
rusting is in nails, bikes, rings tarnishing is in pennies
500
How can a solution be separated if it looks completely dissolved? ex. salt water
you can use instruments or evaporate the water, and separate the 2 things in solution
500
How would I find the volume of a box? units? How would I find the volume of a small pebble? units?
1) Length X Width X Height, cubic centimeters 2) graduated cylinder, milliliter
500
Can something be the same mass or volume and have a DIFFERENT DENSITY? explain using 2 liquids where 1 sinks and 1 floats.
if oil sinks, it is more dense than water (which floats) this means that even though we put 3 ml of each, the oil is more compacted than water
500
What do we have to do to make water go from liquid to gas? What is the boiling point of water? Explain
boil- gain energy to make particles go quickly and become gas 100 degrees celcius
500
What actually happens for something to rust?
the object reacts with the oxygen in the air and gradually changes color (rusts!)