A solid (maintains/does not retain) its shape.
maintains
How could you make this solution with the highest possible concentration? 5g of salt + 5mL of water + ____________
MORE SALT!
You make hot chocolate by adding 100g of cocoa powder and 500g of milk into a pan. After heating the pan, you measure 600g of hot chocolate in the pan. This proves that the materials...
have the same total mass before and after the change.
You have are making a boat with a base area of 20 square cm that must carry as many pennies as possible. What tools would you need to help make your boat design, flotation, and loading of your boat?
Ruler to measure the base, graduated cylinder to measure volume, and balance to measure mass.
What elements make up hydrogen peroxide, and how many atoms of each element are there?
Hydrogen and Oxygen. There are 2 atoms of Hydrogen and 2 atoms of Oxygen.
Beaker A has water and lemon juice added to it and then is placed into the freezer. Beaker A shows no change. What kind of change, if any, has taken place?
Physical Change
Solid to liquid is called...
melting
What would make a solute dissolve faster?
smaller solute sizes, temperature increase
Solid, liquid, or gas? Has definite shape.
Solid
When one carbon atom bonds chemically with two oxygen atoms, carbon dioxide is formed. This new substance is BEST defined as a ________________.
compound
Solid, liquid, or gas? Volume can be measured by a graduated cylinder.
Liquid
How do you make a solution MORE concentrated?
Add more solute!
Solid, liquid, or gas? Volume can be measured by a ruler.
Solid
What steps would help students dissolve sugar more quickly?
break it into smaller pieces, and heat and stir the solution
Crushing a can is an example of...
physical change
Solid, liquid or gas? Takes the shape of its container.
Liquid
Beaker B has baking soda and lemon juice added to it. Beaker B forms bubbles. What kind of change, if any, is taking place?
Chemical Change
a fire burning is an example of...
chemical change
You make hot chocolate by adding 100g of cocoa powder and 500g of milk into a pan. After heating the pan, you measure 600g of hot chocolate in the pan. The appearance ____ but total amount of matter ______.
changed, stayed the same
There is a cup of 8kg of ice. After a few hours, there is 5kg of ice and 3kg of water in the cup. Before the change in matter, the mass of the ice was ______.
8kg
What are two physical changes? A. paper burning. B. ice melting. C. firecracker exploding. D. a fence rusting. E. bread being sliced.
B. ice melting and E. bread being sliced
Goldfish crackers, M&Ms, popcorn, and pretzels combined in a bowl represents a __________.
mixture
Solid, liquid, or gas? Expands to fill its container.
Gas
There is a cup of 8kg of ice. After a few hours, there is 5kg of ice and 3kg of water in the cup. After the change in matter, the mass of the ice was ______.
5kg
A solid (maintains/does not retain) its volume.
maintains
Janajah examined different minerals. She noticed that the minerals have different colors and lusters. She determines the red mineral can scratch the colorless mineral. She concludes the red mineral is _________ than the colorless mineral.
harder
You make hot chocolate by adding 100g of cocoa powder and 500g of milk into a pan. After heating the pan, you measure 600g of hot chocolate in the pan. The new measurement shows that when the two substances were mixed, the total weight ____
was conserved
food coloring dissolving in water is an example of...
solution
What would decrease the rate of a solute dissolving (dissolve slower)?
larger solute sizes, decreased temperatures
Why would you add more salt to a salt water solution to increase the concentration?
Salt is a solute; this would provide the highest salt to water ratio.
Oil floats on water because oil is __________ than water.
less dense
gas to solid is called...
freezing! or deposition...
Solid, liquid, or gas? Volume cannot be measured easily.
Gas
liquid to gas is called...
vaporizing, or evaporation
A solid (maintains/does not retain) its mass.
maintains
oil and water is an example of...
mixture