Investigation on Substances

Why is it important to control variables in an experiment?

• To make the experiment more fun

• To ensure the results are reliable

• To use more substances

• To finish the experiment quickly

Tags

NGSS.MS-PS3-4

What did Aiko observe about the apple in the plastic bag after 4 hours?

• It was brown and dry

• It was fresh and unchanged

• It was soft and mushy

• It was hard and brittle

What is the purpose of recording the properties of the substances both before and after they are combined?

• to determine if substances can have color

• to determine which mixture is the heaviest

• to determine which mixture formed the fastest

• to determine if new substances have been made

Tags

NGSS.MS-PS1-2

Trevor was given 5 kilograms of clay. He used all the clay and molded a clay pot. What is the mass of the clay pot?

• 3 kilograms

• 4 kilograms

• 5 kilograms

• 6 kilograms

John, Jacob, and Jamian were creating figures with modeling clay. They divided a 90-gram bar of clay. John and Jamian combined their clay to make one large figure, then Jacob added his. What happened to the mass of the figure they created?

• The resulting figure’s mass would be about 180 grams, since John and Jamian’s figure had twice as much clay.

• The resulting figure’s mass would be about 90 grams, since the divided clay was formed back together.

• The resulting figure’s mass would be about 30 grams, since the original bar was divided into thirds.

• The resulting figure’s mass would be about 270 grams, since all three boys combined their clay.

Tags

NGSS.MS-PS1-5

Johnny tore a sheet of paper into pieces. How does the mass of all the pieces compare to the mass of the sheet before it was torn?

• The total mass of the pieces would be greater than the mass of the whole sheet.

• The total mass of the pieces would be less than the mass of the whole sheet.

• The total mass of the pieces would be more than twice the mass of the whole sheet.

• The total mass of the pieces would be the same as the mass of the whole sheet.

Tags

NGSS.MS-PS1-5

Amy poured soda into a glass. The soda and the glass had a mass of 400 grams. Amy then added ice cubes to her glass. Which is most likely the new mass?

• 200 grams

• 350 grams

• 400 grams

• 420 grams

Tags

NGSS.MS-PS1-2

Javier added 4 cubes of sugar that have a mass of 1 gram per piece to 15 grams of sugar water. How many grams of sugar water are combined?

• 4 grams

• 5 grams

• 15 grams

• 19 grams

A solution of sugar, salt, and water has a mass of 425 grams. There are 250 grams of water and 75 grams of salt. How many grams of sugar are mixed into the solution?

• 50 grams

• 100 grams

• 175 grams

• 350 grams

Suzy puts a closed bottle of water in the freezer. How does the weight of the frozen bottle of water compare to the weight of the unfrozen water bottle?

• The unfrozen bottle of water weighs more because water weighs more than ice.

• The unfrozen bottle of water and the frozen bottle of water weigh the same amount.

• The frozen bottle of water weighs more because the ice weighs more than water.

• The frozen bottle of water weighs more because the bottle expanded and increased the mass.

Tags

NGSS.MS-PS1-4