State of Matter
The four states of matter.
What are solids, liquids, gases and plasma?
When heat and energy is added to a solid, the name of the phase change that occurs is...
What is melting?
In a scientific experiment this is any factor, condition, or part that can be changed, measured, or kept the same.
What is a variable?
Expansion gaps are an important part of bridge construction because..
They allow for expansion and contraction during the heat of summer and cool of winter?
The scientific term for an invisible pull that brings matter together, which can be strong or weak.
What is attractive forces?
Particles vibrate in place, has definite shape, and definite volume.
What is a solid?
When you have a shower, the steam fogs up the mirror and turns into water droplets. This is called...
What is condensation?
The term for the variables will stay the same in each test for your experiment.
What is a controlled/constant variable?
A gas expands and becomes less dense when...
(Hint: Think about how you manipulate attractive forces.)
Energy is added and a gas heats up.
The basic structures and facilities needed for a society to operate.
What is infrastructure?
Adam boiled water and steam was seen coming off the top. These are the two states of matter that were observed in this experiment.
What is liquid and gas?
When a substance undergoes a phase transition, the size may change, but what stays the same?
What is the substance's mass?
The definition of a hypothesis.
What is an educated guess?
Explain the way a liquid thermometer measures temperature.
What is the liquid expands when heated and contracts when cooled?
The term for when a solid changes directly into a gas.
What is sublimation?
State the vocabulary term and the temperature at which a substance changes from a liquid to a gas.
What is the boiling point at 100°C?
Identify TWO properties of particles that change when a substance undergoes a change in state.
What is speed and attractive forces?
A responding variable is also known as a....
What is a dependent variable?
You have an empty bottle with a balloon on top. You know that if you heat up the bottle, the balloon will inflate. Explain why.
The balloon will inflate because when gas particles heat up, they expand. As the air inside the bottle warms up and needs more space to spread out, it pushes upward into the balloon, causing the balloon to inflate.
The scientific term for the amount of matter in a solid, liquid, or gas.
What is mass?
A state of matter that has a definite volume, but takes on the shape of its container.
What is liquid?
Explain why ice floats. (Hint: Your answer should include the word density.)
Water is a special substance because its particles spread further apart when it freezes, making solid ice less dense than liquid water. Because of this difference in density, the heavier liquid water sinks to the bottom while the lighter ice rises to the top, which is exactly why ice floats.
You conduct a test with a model airplane powered by an elastic band propeller. You constructs the model plane and launch it three times. Before each launch, you twist the elastic band a different number of times. You compare the resulting distance travelled by each launch.
Identify the dependent variable in your experiment.
What is the distance travelled by each launch?
What do you call the top layer of a body of water in the winter and what does this top layer do?
The insulating layer is the layer of ice that forms and floats on the surface of a body of water in winter. It protects the liquid water underneath from the cold air above, helping prevent it from freezing.
The term for a comparison of the mass of a solid, liquid, or gas to its volume.
What is density?