States of Matter
How would you change a solid to a liquid?
add heat
Burning wood is what kind of change
chemical change
Color is what kind of property
Physical property
Trail mix is a mixture or solution
mixture
What tool would you use to observe the cell membrane of an animal cell
a microscope
What is the process called when you change a solid to a liquid?
melting
Tearing paper into small pieces is what kind of change
physical change
name a physical property
color,texture,size,etc
How would I separate a mixture of sand and rocks?
I would use a strainer/sifter
Name a harmful microoganisms
salmonella, answers may vary
I opened a can of orange soda and poured it into a glass. I added ice to the glass with the orange soda. I left the glass of soda with ice on the table and went to cut the grass. When I came back in from cutting the grass, the ice was gone. What happened to the ice?
The soda was warmer than the ice and melted the ice.
A type of change that forms a new substance
chemical change
When mixing m&ms and pretzels, what happens? Do they lose any of their physical properties?
No, mixing pretzels and m&m's creates a mixture. The pretzels and m&m's stay the same or keep all of their same physical properties when they are mixed
How would I separate a mixture of sand and iron filings and why?
Use a magnet.
The nucleus of the cell has what job?
it is the control center or brain of the cell
What change in matter will happen if I continuously add heat to a pot of water?
The water will eventually evaporate or turn to gas.
liquid to gas.
Give 2 examples of a physical change
change in color, shape, size,smell etc. Answers may vary
chemical property
Lemonade is what kind mixture?
Homogenous mixture or a solution
John wants to create a circuit to light up a bulb. He has a copper wire and a light bulb. What else does he need?
a power source like a battery
What is the process called when a liquid changes to a solid? Why does this happen?
Freezing, heat is removed or the temperature is lowered or goes down.
Give 2 examples of a chemical change
burning wood or paper, baking a cake, mixing baking soda and vinegar, etc. Answers may vary
baking soda and vinegar have the chemical property of what?
reactivity
Is salsa a mixture or solution and why or why not?
Salsa is a mixture because all of the ingredients maintain their original physical properties and the ingredients can be easily separated.
What two cell structures are only found in a plant cell?
chloroplast and cell wall