Which of these terms is a measurement of how much matter is in an object?

Which of these terms is a measurement of how much matter is in an object?

A scientist adds a few teaspoons of sugar to a cup of warm water and begins to stir. Eventually the sugar dissolves into the water. Which of the following graphs best represents the amount of matter in the sugar before and after the scientist began stirring?

A scientist adds a few teaspoons of sugar to a cup of warm water and begins to stir. Eventually the sugar dissolves into the water. Which of the following graphs best represents the amount of matter in the sugar before and after the scientist began stirring?

Will the mass change when reactants combine to form products in a chemical reaction? Why?

Will the mass change when reactants combine to form products in a chemical reaction? Why?

Lamonte is doing a science experiment. They have a jar full of 10 grams of sugar. They add 5 grams of a mystery chemical. When the two are mixed, they create a new solid and no gases. The container is very hot. How many grams of the new substance should be in the jar at the end of the experiment?

Lamonte is doing a science experiment. They have a jar full of 10 grams of sugar. They add 5 grams of a mystery chemical. When the two are mixed, they create a new solid and no gases. The container is very hot. How many grams of the new substance should be in the jar at the end of the experiment?

In which of these situations does the some of the matter disappear, instead of changing forms?

In which of these situations does the some of the matter disappear, instead of changing forms?