States of Matter
What are the 3 states of matter?
Solid, liquid, gas
What in a wire can you stop the power from zapping you?
Insolator
give an example of a physical change
Eroding the side of a mountain or ripping paper.
answers may verify.
You heat water and pour sugar in the water then you let it dissolve. Chemical or Physical?
What is Physical
are waves crashing on the shore a constructive or destructive force
destructive
What is the process of going from a solid to a liquid?
Melting
Why is soured milk a chemical change?
It has a strong odor, gets chunky, and becomes a new subtance.
The particles will move faster and if it keeps boiling, the water will eventually evaporate.
making salsa
physical
what cell is green and is the only one that has a cell wall?
plant cell
What happens to the molecules when you add heat to ice?
The particles start to move faster and more rapidly.
Why is straining pulp from orange juice a physical change?
It is a mixture that can be separated.
cutting an apple
physical
What bad microorganism grows on food
mold
How can you separate salt from water?
Heat it until it reaches its boiling point. This will cause a physical change to separate the salt from the water.
List 3 signs that a chemical change has occured.
Gas bubbles form, odor, color change, rapid increase in temperature
What happens when you add water to a salt and sand mix?
The salt will dissolve and the sand will not.
placing antacid tablet in water
chemical
What organelle makes food for a plant cell
Chloroplast