Properties of Matter
What are the tiny building blocks that make up all matter?
Particles
A liquid has a _______________ volume but not a fixed shape.
Fixed
True of False: When wood burns, it transforms into a new substance.
True! When wood burns, it will transform into ash.
If a substance completely blends into another, what has happened?
It dissolves.
What property describes how well a material reflects light?
Reflectivity
How does the weight of an inflated balloon compare to the weight of an empty balloon.
The weight of the balloon with air weighs more than the balloon that is empty.
When baking soda and vinegar are mixed in a sealed bag, bubbles appear, and the bag inflates due to what?
A gas
The gas formed is named Carbon Dioxide
What does it mean to conserve matter during a change?
a. it dissolves into another material
b. it becomes lighter
c. the total amount stays the same
c. the total amount stays the same.
What are the four physical properties of an object that you can observe?
1. Hardness
2. Color
3. Brittleness
4. Reflectivity
Draw a picture showing how the particles of a solid are arranged.
What is a sign that a chemical reaction has taken place and a new substance has been formed when baking a cake?
a. bubbles appear and burst
b. eggs and butter are mixed
c. flour and baking soda are mixed together.
a. bubbles appear and burst
When substances dissolve, what happens?
a. their properties change, and a reaction takes place.
b. no changes happen, and no reaction occurs.
c. their properties change, but no reaction takes place.
c. their properties change, but no reaction takes place.
Which of these materials is best for conducting heat and electricity?
a. wood
b. rubber
c. copper
d. plastic
c. copper
Draw a picture showing how the particles in a gas are arranged?
The particles should be moving freely and spread out to fill their container.
Why does a glow stick light up when you bend it?
There are two liquids in the glow stick that when you break it, they mix and react.
True or False: Adding sugar into coffee makes sugar disappear, and the liquid still looks looks like coffee.
True: The sugar dissolves into the coffee, even though the sugar is still there, the coffee is still coffee.
Why is plastic used to cover electrical wires?
Plastic does not conduct electricity well. (Insulator)
Give an example of something changing from a solid to a liquid.
Example: an ice cube melting to a puddle of water.
What happens to the particles during a chemical reaction?
a. they rearrange
b. they dissolve
a. they dissolve
A liquid dissolving in another liquid creates what kind of mixture?
a solution