What is Matter?
3 States of Matter
Liquid, Solid, and Gas
Properties that you can figure out by using your senses are what?
Observable Properties
Is cutting a piece of paper a physical or chemical change?
Physical Change
What do we call two or more substances combined together without forming a new substance?
Mixture
What is the law that states matter cannot be created or destroyed?
Law of Conservation of Mass
What is matter?
Anything that has mass and takes up space.
Properties that you can figure out by using tools are called what?
Measurable Property
Is burning a piece of wood a physical or chemical change?
Chemical Change
Is trail mix a mixture or a solution?
Mixture
When ice melts into liquid water, is matter lost?
No
Which state of matter has a definite shape and definite volume?
Solid
What property tells us how much space an object takes up?
Volume
What type of change happens when a substance changes its size, shape, or state but remains the same substance?
Physical Change
What do we call a mixture where one substance dissolves evenly into another?
Solution
If you have 10 grams of matter before a physical change, how much matter should you have afterward?
10 grams
Which state of matter takes the shape of its container but has a definite volume?
Liquid
If we are paying attention to if something sinks or floats, we are observing its what?
Buoyancy
What type of change happens when one or more new substances are formed?
Chemical Change
In salt water, what is the solute (the substance being dissolved)?
Salt
A student combines 5 grams of one substance with 8 grams of another. What should the total mass be?
13 grams
What is mass?
The amount of matter in something.
Two objects are the same size, but one has more mass. Which object has greater density?
The object with more mass
A student mixes baking soda and vinegar and observes bubbles forming. Is this a physical or chemical change, and what evidence supports your answer?
Chemical change; gas is produced, which is evidence of a chemical reaction.
A student mixes sand and water. Can the sand dissolve into the water to form a solution? Why or why not?
No. Sand does not dissolve in water; it forms a mixture where the sand remains separate.
A sealed container has 20 grams of reactants before a chemical reaction. After the reaction, how much total mass should be in the container? Explain.
20 grams. Matter cannot be created or destroyed, even during a chemical reaction.