Mass and Matter
How many states of matter are there?
Three
What is density?
A measure of the amount of matter in an object.
What is a property?
An attribute, quality or characteristic of something.
What are the 3 states of matter we have talked about?
Solids, liquids and gasses
What is a physical change of matter?
A physical change is a reversible change that does not change what the object is.
What is mass?
How much matter is in an object.
Measuring density has to do with what two things?
A.) Weight and Shape
B.) Mass and Shape
C.) Mass and Volume
D.) Size and volume
C.) Mass and Volume
What is a physical property?
A physical property is one of those things that can be measured or observed by using our senses and scientific tools.
True or False: Can matter change from one state to another?
True
What is a chemical change of matter?
A chemical change is an irreversible change that completely changes the object.
What is Matter?
Anything that has mass and takes up space.
How do we calculate density?
Density = Mass/Volume
How can physical properties be measured?
5 senses (sight, touch, taste, smell, hear)
Scientific tools (solid-balance scales and spring scales; liquid-measured containers such as beakers and measuring cups.
What is it called when a liquid turns into a gas?
Evaporation
Is chopping wood a physical or chemical change?
Physical
What is temperature?
The amount of hotness or coldness in an object
If a solution in a test tube has a mass of 20g and has a volume of 10ml3, what is the density of the solution?
2g/ml3
What is the name of the process that helps scientists investigate and solve questions or problems?
The Scientific Method
What is it called when a gas turns back into a liquid?
Condensation
Is grilling a steak a physical or chemical change?
Chemical
What is volume?
A measure of how much space an object takes up.
If a wooden cube has a mass of 100g and has a volume of 5in3, what would be the density?
20g/in3
Name the 5 steps in the Scientific Method.
1.) Ask a question/Pose a problem
2.) Do research/ Observe
3.) Make a hypothesis
4.) Test your hypothesis/ Experiment
5.) Conclusion - What was your results?
Draw a diagram of how particles look in a solid, liquid and gas.
Solid- Particles are tightly packed together; cannot move
Liquid- Slightly spaced out; can move around
Gas- Very spaced out; can move around very quickly
What is the difference between a physical change and a chemical change?
A physical change can be reversed. A chemical change cannot be reversed.
A physical change does not change what the object is. A chemical change changes what the object is completely.