Law Of Conservation of Mass

Front

Anthony adds 0.25 grams of baking soda to 5 grams of water and stirs. What will the mass of the solution be?

Back

5.25 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Matter can not be created nor destroyed: it can only be

Back

Transformed, changed

Tags

NGSS.MS-PS1-5

Front

If reaction starts with 20g of reactants, it should produce how many grams of products?

Back

a total of 20g of products

Tags

NGSS.MS-PS1-5

Front

Which of the models of a chemical reaction best represents the Law of Conservation of Mass? Options: A, B, C, D

Back

A

Tags

NGSS.MS-PS1-5

Front

Which of the models of a chemical reaction best represents the Law of Conservation of Mass? Options: A, B, C, D

Back

A

Tags

NGSS.MS-PS1-5

Front

Which of the models of a chemical reaction best represents the Law of Conservation of Mass? Options: A, B, C, D

Back

A

Tags

NGSS.MS-PS1-5

Front

True or False: The mass of the reactants in a chemical equation must equal the mass of the products.

Back

TRUE

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample? Options: The heat caused the chemical to become less dense., Some of the lighter particles were destroyed., The reaction gave off more heat than was added., Some of the particles escaped as a gas formed.

Back

Some of the particles escaped as a gas formed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

A chemical reaction that releases energy _________ and a chemical reaction that absorbs energy is called _____________.

Back

exothermic; endothermic

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Front

A system where only energy can be exchanged but not matter

Back

Close system

Tags

NGSS.HS-PS3-4