Matter
Matter is ___________.
Everything, anything that takes up space
Heat causes molecules in matter to.
A. Speed up
B. Slow down
Speed Up
What is the difference between a mixture and a solution?
A mixture is a combination of two or more substances that are physically mixed together, while a solution is a type of mixture where substances are evenly distributed and completely dissolve in one another.
Name five types of energy.
Electrical, mechanical
Sound, light, potential
Thermal, kinetic
In order for electricity to flow a circuit must be
A. open
B. closed
closed
What do liquids and gases have in common?
They both take the shape of their container. They are both made up of molecules called atoms.
In the states of water, what can cause the small particles to move differently?
A. Put ice cubes in a cup.
B. Put sand through a sieve.
C. Put water in a beaker and place it on a hot plate.
D. Dissolve salt in water.
C. Put water in a beaker and place it on a hot plate.
What tool would we use to separate iron fillings and sand?
A. magnet
B. sieve
C. Water to dissolve the iron fillings
D. Our hands
A. magnet
Which of these objects use sound energy?
a hot air balloon
a computer beeping
a radio
a basketball bouncing
a feather floating
A computer beeping, a radio, a basketball bouncing
A balloon has a negative charge. A rod has a positive charge. What will happen when the rod is near the balloon.
They will attract.
Ms. McCarthy has an ice cube that has a mass of 8 grams. She places it in a sealed container and then puts it in the microwave on high. The ice cube melts after a few seconds. She removes the sealed container with the melted ice cube and checks the mass again. Which sentence BEST describes what Ms. McCarthy discovers?
A. The mass is greater after the cube melts.
B. The mass is less after the cube melts.
C. The mass is the same after the cube melts.
C. The mass is the same after the cube melts.
Ivan is doing an experiment to show how temperature affects the time it takes for ice to melt in his drink. Which is most likely the results?
A. An increase in temperature caused the ice to melt faster.
B. An increase in temperature caused the ice to melt at slower rate.
C. A decrease in temperature caused an increase in the speed of melting.
D. A decrease in temperature caused no change.
A. An increase in temperature caused the ice to melt faster.
What should a student do to cause salt, baking soda, or sugar to dissolve faster?
Add heat, stir, or uses smaller amounts
How is energy transferred to cook a meal on the stove?
Electrical energy is transferred into heat and light.
What is static electricity?
A. When solar panels gives your home enough electricity for all your appliances to work is called static electricity.
B. When the north and south pole of magnets attract to pick of metals is called static electricity.
C. Electrons transfer when materials come in contact, leaving one object with an excess of electrons. The build-up of excess charge is called static electricity.
C. Electrons transfer when materials come in contact, leaving one object with an excess of electrons. The build-up of excess charge is called static electricity.
Dillard Elementary's fifth grade students conducted an investigation. They planted seeds in small pots. Some pots were put outside. Some pots were put in a box with a lid. Which of the questions can be answered from the results of this experiment?
A. How much water do plants need in order to grow?
B. Does light affect plant growth?
C. Does the size of the pot change how the plant grows?
B. Does light affect plant growth?
Think about how temperature can affect both chemical and physical changes. Which of these changes is a result of an increase in temperature?
A. A gelatin dessert hardening in a refrigerator.
B. Putting a campfire out with a large bucket of water
C. A stick of butter on a table melting in the sunlight.
D. freezing temperatures causing sidewalks to be slippery
C. A stick of butter on a table melting in the sunlight.
In which of these mixtures can the two separate parts be identified just by looking at it?
A. oil mixed with water
B. salt dissolved in water
C. sugar dissolved in water
A. oil mixed with water
Which of following statements is TRUE?
A. In a radio, sound energy is transformed into electricity energy.
B. In a microwave oven, electricity is transformed into chemical energy.
C. In a hair dryer, electrical energy is transformed into light and heat.
D. In a computer, electrical energy is transformed into sound, light, and heat.
D. In a computer, electrical energy is transformed into sound, light, and heat
Electrical tape is rubber tape that is wrapped around bare electrical wires. The purpose of this tape is that
A. rubber is a conductor and transfers electricity from the wire.
B. rubber is an insulator and is used as a safety feature.
C. the tape keeps multiple wires together.t
D. the tape keeps wire in place.
B. rubber is an insulator and is used as a safety feature.
A child puts a bottle of water in the freezer because it is not very cold and they want to drink it soon. However, the child forgets about the bottle and leaves it in the freezer overnight.
Which of these would be evidence that the water expanded when it turned to ice?
A. The bottle caved in with the frozen ice.
B. The bottle got bigger and the lid popped off.
C. There is less water in the bottle after freezing.
D. The bottle weighs less after freezing.
B. The bottle got bigger and the lid popped off.
Mr. Gregory is teaching his students about the effects of temperature on chemical changes. He adds a chemical to a glass beaker and asks a student to use a stopwatch to measure the amount of time it takes for the chemical to have a reaction to heat. Mr. Gregory then sets the Bunsen burner flame on "high" and holds the beaker a few inches above the heat. Within a few seconds, the mixture begins to bubble and fizz. The reaction happened so quickly, the student did not stop the stopwatch fast enough. Mr. Gregory wants to try the test again, but wants the reaction to happen more slowly to give students time to see what happens.
What could Mr. Gregory do to make the chemical change occur slower?
A. decrease the flame setting to produce less heat
B. use a larger beaker with the same amount of the chemical
C. add cold water to the mixture to reduce its temperature
D. test only half the amount of the chemical as the first try
A. decrease the flame setting to produce less heat
Mixtures can be separated using a variety of methods, such as evaporation. What mixture could be separated using this method?
A. water and ice
B. salt and water
C. sand and pebbles
D. sand and iron filings
B. salt and water
During soccer practice, Coach Williams rolls a ball to Carly, who kicks it hard to the other side of the field. Which best explains what happened to the ball when Carly kicked it.
A. The ball recycled the energy from Carly's kick, keeping the same speed.
B. Carly's kick created gravity forcing the ball in the opposite direction.
C. The energy from Carly's kick changed the speed and direction of the ball.
D. Carly's kick pushed air particles against the ball, changing its direction.
D. Carly's kick pushed air particles against the ball, changing its direction.
Ryan wants to transform electrical energy into light energy. He decides to build a complete circuit that will operate a light bulb. What materials does he need?
A. a battery, wire, plastic clips, and a bulb
B. a battery, string, plastic clips, and a fan
C. a source of electrical energy, wire, metal clips, and a bulb
D. a source of electrical energy, string, metal clips, and a bulb
C. a source of electrical energy, wire, metal clips, and a bulb