SC.5.P.8.1
There are three main states of matter: liquid, solid, and gas. Which statement describes the shape of a solid?
A It has its own shape.
B It does not have shape.
C It takes the shape of its container.
D It changes shape with temperature.
A It has its own shape
Which of the following dissolves in water?
a. butter
b. pepper
c. salt
d. sand
c. salt
Heidi combined lettuce, tomatoes, cucumbers, and shredded cheese to make a salad. Which best describes what Heidi made?
A combination
B element
C mixture
D solution
c Mixture
One morning, Ryan noticed there were tiny drops of water on the grass as he walked to school. That afternoon, he did not see any drops of water on the grass when he returned home. Which of the following best explains what happened to the drops of water?
A. The heat from the air caused the water drops to boil.
B. The air cooled the water and caused the drops to freeze.
C. The Sun heated the water and caused the drops to evaporate.
D. The energy from the Sun caused the water drops to condense.
C. The Sun heated the water and caused the drops to evaporate.
What is a variable?
a factor that can change in an experiment
For example, when testing the Mentos in soda, a variable can be what soda you are using, due to you changing it each time
Matter may be a gas, solid, or liquid. It can change from one state to another. Which change most often causes matter to change state?
A change in mass
B change in color
C change in volume
D change in temperature
D change in temperature
Salim is studying how the rate of stirring affects the time it takes for salt to dissolve. He added 1 g of salt to each of four beakers filled with water, stirred the water at different speeds, and recorded how long it took for all the salt to dissolve each time. Salim’s results are shown in the following table
No Stirring: 25 seconds
Slow Stirring: 18 Seconds
Medium Stirring: 10 Seconds
Fast Stirring: 6 seconds
What can we conclude about the results?
Stirring a solution of water increases the rate at which a salt dissolves.
____ 5. A container holds a mixture of glass shards and iron filings. What is the best way to separate the glass shards from the iron filings?
A Use a magnet.
B Heat the mixture.
C Sort them by size.
D Separate them by shape.
A Use a magnet.
What can cause ice to melt?
heat, especially from the sun
Four students are planning science projects. Which student is conducting an experiment?
A. Selene is documenting the number of different types of birds she sees in her backyard each day.
B. Walden is creating a presentation about the phases of the moon.
C. My is measuring the height of her friends at different times of the day.
D. Sasha is designing an experiment to see how different types of soil affect plant growth.
D. Sasha is designing an experiment to see how different types of soil affect plant growth.
What is the difference, or physical properties, of a gas compared to a liquid?
Liquids take the shape of their container, while gases expand to fill their container
Mrs. Lopez is a chemist who is studying salt crystals. She wants to slow the rate at which the crystals dissolve in a solution of water. What could she do to slow the dissolving rate?
A Crush the salt.
B Stir the solution.
C Heat the solution.
D Cool the solution.
D Cool the solution.
How can I separate sand and salt?
Add water and the salt will dissolve!
When heat is applied to a liquid (physical change), what occurs?
It changes states of matter, to a gas
Why is creating graphs helpful for experiements?
It can show us patterns in our experiments or things that are occurring often
During an experiment, Carlos heated a beaker of water over a hot plate burner. After a period of time, the beaker was empty. Which statement describes what happened?
A The water froze.
B The water melted.
C The water condensed.
D The water evaporated
D The water evaporated
Gabrielle created a solution using a solute and a solvent. Which best describes a solution?
A a chemical change
B a chemical reaction
C any combination of two or more liquids
D an evenly distributed mixture of two or more substances
D an evenly distributed mixture of two or more substances
When ice melts, what occurs about the states of matter?
a physical change due to the ice melting, but it still remains water
What is a factor that could speed up chemical changes?
heat, increasing temperature
Francisco is doing an experiment to see what materials complete a circuit.
Which activity will NOT be part of his experiment?
recording observations
gathering opinions
interpreting data
making a plan
gathering opinions
Define the three states of matter, fully explaining their physical properties.
Liquid
Gas
Solid
Andrea created a solution by adding food coloring to water. Her solution is also a mixture. 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 are always permanently combined.
C The parts of all solutions are evenly mixed.
which is why we can remove salt still. Even though it's mixed evenly, we can remove it through heat!
Like our experiment in class, how can I separate water, salt, and pepper ?
You can use a coffee filter to separate the pepper, but the salt will dissolve in the water
What is an example of chemical change?
Rusting metal/iron
burning wood
rotting fruit
baking a cake
cooking an egg
fireworks
Tammy is investigating whether a person's height remains the same all day long. She plans to measure the heights of five friends at different times of the day. What type of investigation is Tammy doing?
A. A demonstration
B. An experiment
C. An interview
D. A survey
D. A survey