When solid water (ice) melts and becomes liquid water - what is happening to the molecules of the water?
The diagram above shows ice cubes before and after they melt. Which answer is most likely to be true?
Does this image show a physical or a chemical change?
Does this image show a physical or a chemical change?
When matter goes through physical changes, does the mass, or weight of the matter change? Are atoms in the matter created and destroyed, or do they stay the same?
Today you are going to gather evidence to create your own conclusion about this question!
EXPERIMENT #1 - Dissolving Sugar in Water
Sugar and water were put on a scale separately to find the total mass.
What’s the total mass (of the sugar, water, and the containers) when the sugar and water are separate?
__________ grams.
Predict what will happen to the mass after the sugar is dissolved in the water - will it increase, decrease or stay the same?
Jaivin mixes 5 pounds of white paint and 4 pounds of red paint. How much would the pink paint he makes weigh? _________________ pounds
Ice was put in a measuring cup and a scale was used to find the mass. Answer the questions using the before and after photos below.
What’s the mass (weight) when the ice is solid? _______ grams
What’s the mass (weight) when the ice has melted into liquid water? _______ grams
How does this experiment support our key concept about the conservation of matter (matter is not created or destroyed)?
What happened to the amount of atoms in the ice?
The amount of atoms in the ice ___________
Based on the video, what’s the total mass (of the sugar, water, and the containers) after the sugar was dissolved (mixed) in the water?
__________ grams
Did the mass, or weight of the matter (sugar + water + containers) change?
Are atoms in the matter (sugar + water + containers) created (more matter) and destroyed (less matter), or do they stay the same when the sugar dissolved in water?
