States of Matter
What are the 3 states of matter?
solid, liquid, gas
A chemical change is when a brand new substance is formed and is irreversible. True or False?
True - chemical changes create brand new substances and cannot be reversed
Solids have a definite ___ and ____
shape and volume
Liquids have a definite _____, but no definite _____
volume, shape
Gas has no definite ________ or _____
volume, shape
What is the definition of matter?
"matter" is defined as anything that occupies space and has mass, meaning it has volume and can be weighed;
Ms. Kim wants to cut her hair. Is this an example of a physical change or chemical change?
Describe the particles in a solid. How close are they to each other and what kind of pattern are they in?
closely, fixed
Describe the particles in a liquid. How do they move around and how close are they to each other?
Particles move freely and are close together
Describe the particles in a gas. How do they move and how close are they to each other?
Particles are far apart and move freely
added or removed
Ms. Kim baked a cake. I wanted to decorate the outside with icing and sprinkles. Which part of this example is a physical change and which part is a chemical change?
chemical change - baking a cake
physical change - decorating the cake
If a solid (ice) starts to melt, is heat being added or removed? What does the solid become?
Heat is being added; the heat melts the ice into a liquid.
What happens to a liquid if you add heat? What is this change in matter called?
The water will heat up to gas and the water will evaporate.
What happens to the gas if you add heat? What is this change in state called?
The gas will turn into a liquid and condensation will happen
What are the 3 ways to measure matter? What is the formula for finding volume?
mass, weight, volume
length x width x height
If you see a color change, production of bubbles, heat, or light, are these are clues of a physical change or chemical change? Give me an example of a chemical change (venn diagram)
chemical change - change in color and heat/light/bubbles are all signs of a chemical change
burning wood, baking, rusting, dying hair, eating,
When it snows outside in the wintertime, how come the snow stays a solid and does not melt into a liquid?
The cold temperature is below frozen, keeping the snow in its solid form. (32 degrees to freeze)
What temperature does it need to be for a liquid to turn into a solid?
32 degrees
People say that Air/Gas is not a type of matter. We did a lab in class to prove otherwise. What were the 4 stations we did and what can air do/have? (Look at your lab worksheet).
Building a water fountain, Measuring air on a scale, Balancing balloons on a meter stick, Stacking on top of air
Air has weight, air has pressure, air can hold things,