Solids, Liquids, Gases
What is the process called when a solid turns into a liquid?
Melting
Wilson made a list of activities that involve a chemical change. Which of these changes should be included on his list?
A. Ringing a bell
B. Making ice cubes
C. picking up rocks
D. making pancakes
D. Making pancakes
Johnny performed an investigation. Then Matthew repeated the same investigation. Why is it best to repeat investigations?
To be sure the results are ACCURATE
A magnet can separate what kind of mixture?
A mixture of magnetic and non magnetic particles.
Deshawn has to dissolve salt crystals in water. What would be the best thing to do to help the crystals dissolve quickly?
A. Heal the crystals
B. Crush the crystals
C. Cool the water they are in.
D. Use the largest salt crystals
B. You would make the particle sizes smaller by crushing.
(tricky, you would heat the water, not the crystal)
Temperature at which water boils?
100 degrees Celcius
212 degrees Far.
What are the particles like during the solid state of matter?
Barely moving
(Can make motion with body)
Which of the following is NOT a chemical change?
A. Burning leaves
B. Toasting a bagel
C. Baking a loaf of bread
D. Crumpling aluminum
D. Crumpling Aluminium
There are 3 balloons with yeast, water, and sugar that are placed in 3 separate containers with different water temperatures. One cold, One warm, One hot. What will happen to the cold balloon if the experiment is done correctly?
It will shrink.
Andrea created a solution by adding food coloring to water. Which of these is true of all solutions?
A. They are all liquids
B. They all include water
C. The parts of all solutions are evenly mixed.
D. The substances combine good.
C. The parts of all solutions are evenly mixed.
The _______ the particle size the faster sugar dissolves.
Smaller
Matter
Matter may be a gas, solid, or and can switch through changes of state. Which change MOST OFTEN causes matter to change state?
Change in temperature.
Which of the following represents a physical change?
A. Fire burning
B. Bread toasting
C. Ice melting
D. A person chewing
C. Ice melting
Just changing state
There are 3 balloons with yeast, water, and sugar that are placed in 3 separate containers with different water temperatures. One cold, One warm, One hot. What will happen to the hot balloon if the experiment is done correctly?
It will expand.
Tell me if this is a mixture or a solution.
When you combine ingredients to make a sandwich.
Mixture
The larger the particle size, the _________it takes sugar to dissolve.
slower
Rusting is an example of what kind of change?
Chemical
What do the particles look like during the gas state of matter?
Moving everywhere
(can make motion with body)
Micah boiled water for 5 minutes until bubbles started to form. What change happened during those 5 minutes?
Water was changed into a different state, PHYSICAL
Heat usually __________ the reaction time in chemical changes.
speeds up/increases
Tell me if this is a mixture or a solution.
The solid bits of orange pulp in orange juice.
A. Crush the salt
B. Heat the solution
C . Cool the solution
D. Stir the solution
C. Cool the solution
Which of the following is not a sign of a chemical change?
Change in state
What is the process called of gas turning into a liquid?
Condensation
What is the process called of turning liquid into gas by boiling water?
eVAPORation
What does adding heat do to an egg that is cracked on a pan?
Adding the heat causes a chemical l change in the particles that make the egg solid.
Tell me if this is a mixture or a solution.
Particles of several different gases make up air.
Solution
Which particle size dissolves completely the fastest? Small or Big?
&
Which temperature will that particle size completely dissolve the fastest?
Small and Hot
What is a material's density?
The weight of an object, the ability of an object to float or sink.