Properties of Matter
TEKS 2.5A
TEKS 2.5A
This state of matter keeps its own shape and has tightly packed particles, like a desk or a rock.
What is a solid?
This happens to a solid ice cube when you leave it out in the sun or add heat to it.
What is melting?
Small units like Legos or wooden building blocks can be put together and reassembled to make these.
What are new objects?
Sound is energy that is made when matter moves back and forth very fast, creating these.
What are vibrations?
This is our planet's primary natural source of both light and heat energy.
What is the Sun?
This state of matter does not have its own shape; it takes the shape of whatever container you pour it into.
What is a liquid?
This happens to liquid water when you place it inside a very cold freezer.
What is freezing (or turning into a solid)?
If you want to build a strong, sturdy bridge that can hold heavy toy cars, you should choose blocks made of this hard material instead of soft paper.
What is wood, plastic, or metal?
If you pluck a tight rubber band, you can see it shake and hear a sound. Stopping it from shaking stops this.
What is the sound?
When you look into a mirror or a smooth puddle of water, the light bounces back so you can see your reflection. This bouncing is called what?
What is reflection?
This physical property describes how a material feels when you touch it, such as rough, smooth, or bumpy.
What is texture?
True or False: If you take a piece of paper and fold it into an airplane, it is still paper.
What is True? (Folding changes its physical shape, but it is still paper).
A salad with lettuce, croutons, and cheese is an example of this, where different items are mixed together but keep their own properties.
What is a mixture?
This is the type of low, quiet sound level you should use when speaking to a partner in a quiet classroom.
What is a whisper?
Rubbing your hands together quickly on a cold winter day creates this form of energy to warm them up.
What is thermal energy (or heat)?
If a material can bend easily without breaking—like a rubber band or a pipe cleaner—it has this physical property.
What is flexibility?
This is what happens to liquid water when you heat it up on a stove until it turns into an invisible gas.
What is evaporation (or boiling/turning into water vapor)?
If you dissolve sugar or salt completely into warm water so that it looks like it disappeared, you have created a special type of mixture called this.
What is a solution?
This loud, high-level sound is used in public buildings to safely warn everyone to exit immediately during an emergency.
What is a fire alarm?
Flashlights, lamps, and computer screens all give off this form of energy so that our eyes can see.
What is light energy?
We use words like "hot," "warm," "cool," or "cold" to compare this property of matter.
What is relative temperature?
When water vapor in the air cools down on the outside of a cold soda can, it changes back into liquid drops called this.
What is condensation?
To pull metal paperclips out of a mixture of sand and plastic buttons, you should use this scientific tool.
What is a magnet?
This part of your body picks up sound waves in the air and vibrates so that your brain can hear.
What is the eardrum?
This portable object stores energy and can be placed inside toys, flashlights, or controllers to make them work.
What is a battery?