When two or more substances combine, but each keeps its own properties, the new combination is called a(an)

On a hot day, your friend brings you some iced tea to cool off. Only it is unsweetened. You add sugar, but it just does not dissolve fast enough. Which procedure would speed up the dissolving process?

Suppose you have a container filled with iron and sand. You can separate the iron from the sand if you_____ so this is a ___________.

When salt water is heated leaving behind solid salt, this is separating a mixture by what method?

When black marker is placed on filter paper and the mixture of the dyes separates, this is separating a mixture by what method?

In some water purification plants, solid matter is skimmed of the top of the water. This is separating a mixture by what method?

Usually, when the particle sized is decreased, what will happen to the rate of dissolving?

Josh is designing a lab to separate a mixture of gravel, rocks, and sand. He looks at all the ways to separate the mixture, but decides that one way would work the best on the mixture. Which method should Josh use?

Anna is making sweet tea for the class picnic. She boils the water and then soaks the tea bags to get the perfect color. She decides to add sugar to the tea to sweeten it and ice to make it cold. When should she add the sugar?

Consider the container holding oil, syrup, and water. It would be easy to pour off the oil to separate it from the syrup and water because the liquids have different

Sal stirred 5 grams of salt into a glass of water. The mass of the water was 150 grams. He watched the salt dissolve and seem to disappear. What was the mass of the salt plus the mass of the water after the salt disappeared?

Maria wanted to dissolve some sugar in water but all she had was sugar cubes. Her brother said to crush the cubes. That would help dissolve them faster. Maria told him she needed exactly 10 grams of sugar and crushing them would reduce the mass of the sugar. Is Maria correct?

Identify the physical properties of matter that might be used to separate two solids from a mixture?

When salt and water are mixed, they form a solution like in the ocean. When sand and water are mixed, they form a mixture where the sand does not dissolve. Which statement might summarize this observation?

Which of these is not a solution?

Which is an example of a solution?

Carol's science teacher has challenged the class. The students have been divided into groups. They have to design an experiment to see which group can dissolve one sugar cube in 50mL of water in the least amount of time. Which is the least likely to result in the shortest dissolving time?

During science, Ms. Garcia challenged her students to see who could dissolve sugar cubes in water in the shortest amount of time. One group poured 50 mL of water into a beaker. 1 mL of water has a mass of 1 gram. The group crushed one sugar cube with a mass of 5 grams. They added it to the water and stirred until it dissolved. What is the mass of the water plus the crushed sugar cube?

Trail Mix is a mixture. One way you can tell it is a mixture is you can

Anna is making a salad. She mixes 6 oz of one kind of lettuce and 4 ounces of another kind of lettuce. Then she adds in an ounce of seasonings. What is the mass of the mixture?

Which of these is not a mixture?

When you drink a soft drink like Coke or Pepsi, you are experiencing the parts of a solution. In scientific terms, the best description of a soft drink would be a

Adding the solute in large chunks will

Adding the solute slowly will

Increasing the atmospheric pressure will

Stirring or agitating the solution will

The best method for separating rocks and gravel is

The best method for separating sand and gravel is

The best method for separating sand and iron filingsl is

The best method for separating sand and salt is

The best method for separating sand and wood shavings is

The best method for separating sugar water is

Adding more water to instant coffee will make the coffee a darker color.

Concentration is the amount of material dissolved in a measure of liquid.

To decrease the concentration of a solution, add more liquid.

To dilute means adding less water to make a higher concentrated solution

To increase the concentration of a solution, add more solute.

You typically have more solvent than solute.