IQWST - How Can I Make New Stuff From Old Stuff?: Beginning / End Test

Front

What is density?

Back

Density is the mass of a substance divided by its volume. It determines how heavy a substance is for a given space.

Front

Which material is the least dense?

Back

Cork is the least dense material among grape, syrup, oil, and cork.

Front

Is volume considered a property of matter?

Back

No, volume is not a property; it is a measure of the amount of space an object occupies.

Front

What indicates that a chemical reaction has definitely taken place?

Back

A chemical reaction is confirmed when a new substance with different properties is observed.

Front

What are the products of the reaction: aluminum + copper chloride?

Back

The products are copper and aluminum chloride.

Front

What changes can occur during a chemical reaction?

Back

Changes in color, temperature, gas production, and the formation of a precipitate can occur.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where substances (reactants) transform into new substances (products) with different properties.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, such as water.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.