Properties of Matter
What are the 4 physical properties that we studied?
Conductivity, reflectivity, magnetism, solubility
Chemical changes produce matter in a different form.
Physical changes start and end with matter in the same form.
What type of matter keeps its shape?
A solid
Define a homogenous and heterogenous mixture.
Homogenous: Mixtures that have parts that ARE uniformly mixed together
Heterogenous: Mixtures that have parts that are not uniformly mixed together
How do we observe physical properties>
With our 5 senses!
What does the conservation of mass mean?
Matter is neither created or destroyed in either a physical or chemical change.
What type of matter takes the shape of its container?
A liquid
Give an example of both a heterogenous and homogenous mixture.
Answers may vary.
What is a chemical property?
Characteristic that can only be observed when there is a change in the type of matter.
Change in color, odor, temperature. Formation of a gas or solid.
What type of matter expands to fill its container?
A gas.
6) While sitting in your house, you notice that there are particles of dust floating in the air. These particles of dust that are suspended in the air are an example of a(n) ____.
Aerosol
What measures how much space an object takes up?
Volume
Does a marshmallow being roasted over a fire undergo a chemical change?
Yes because its color changes as does its temperature.
What is the process of a gas losing energy and becoming a liquid?
This is called condensation
What would make sugar dissolve faster in a cup of water?
Warm water
Which material is most likely metal? Why?
Container 1 is clear, bends easily, and quickly melts when near a flame.
Container 2 is not clear, difficult to dent, and does not melt near a flame.
Container 2
I combine 700 g of one material with another material that has 220 g in the same container. A chemical change occurs. What can you tell me about the mass?
The mass of the container will still be 920 g.
How could I measure the volume of a solid box?
Multiply the length, width, and height.
You pour two different types of cereal into one bowl. Is this an example of a mixture or a solution? Explain.
Answers may vary.