Matter and Its Properties
What are the three states of matter?
Solid, liquid, and gas.
What happens to liquid water when it is heated?
It evaporates, or changes into water vapor.
How much does one cup of liquid lemonade weigh?
288 grams.
What was the purpose of the investigation involving Pot A and Pot B?
To compare the weights of two pots of water before and after heating.
What is a property?
An observed or measured characteristic used to describe or identify matter.
What is water vapor?
Water in its gas state.
How much does one cup of frozen lemonade weigh?
288 grams.
Why might the weight of water in Pot B be slightly less after heating?
Some water evaporated into water vapor.
What is the state of matter of ice?
Solid.
What happens when water vapor is cooled?
It changes back into liquid water.
What happens to the total weight of matter when it melts?
It remains the same.
What happens to liquid water as it evaporates?
It changes into a gas called water vapor.
What does it mean to conserve matter?
To maintain or keep the amount of matter the same.
Does melted butter become a different substance?
No. It remains the same substance in a different state.
If liquid water weighs 240 grams, how much will it weigh after freezing?
240 grams.
If a substance weighs 150 grams before freezing, what should it weigh after freezing according to the article's principle?
150 grams.
What is a phase change?
A change from one state of matter to another.
According to the article, does heating or cooling change the amount of matter in a substance?
No. The amount of matter remains the same.
What scientific principle is demonstrated by the examples of liquid water and frozen ice and the weight staying the same?
Matter is conserved when a substance changes state through heating or cooling.
How do scientists prove that matter is conserved?
They compare properties and weights before and after a change.