Conservation of Matter

When ice melts, the water has the same _________ as the

• temperature

• state of matter

• shape

• mass

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

15 grams of sugar are dissolved into 300 grams of water. what is the mass of the mixture?

• 15

• 315

• 285

• 300

Tags

NGSS.MS-PS1-5

250 grams of iron and sand are separated. The mass of the sand is 150 grams. What is the mass of the iron?

• is it impossible to determine.

• 100 grams

• 150 grams

• 250 grams

An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?

• 15 grams
• 25 grams
• 20 grams

Tags

NGSS.MS-PS1-5

Sarah and Jake were each given a ball of clay that has a mass of 400 grams. Both students used all their clay to make an object. Sarah rolled hers into a ball, and Jake made a long, skinny rope. What is the mass of the clay figures now?

• Sarah's weighs more because it is round

• Jake's weighs more because it is long

• There is no way of knowing

• They figures would have equal masses.

Tags

NGSS.MS-PS1-2

If reaction starts with 20g of reactants, it will produce ---

• a total of 40g of product

• a total of 10g of product

• a total of 80 g of product

• a total of 20g of product

Tags

NGSS.MS-PS1-5

In a reaction A + B ----> C.

Reactant A has 5g and product C has 9g.

How many grams does reactant B should have?

• 4g

• 5g

• 9g

• 14g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 

• 2
• 4
• 6
• You need more information to answer this question

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-1

The Law of Conservation of Matter states that the total amount of matter _____ after it undergoes change.

• disappears

• stays the same

• weighs less

• explodes

Tags

NGSS.MS-PS1-5

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5