Conservation of Mass Practice

The Law of Conservation of Mass States

• Energy cannot be created nor destroyed, it can only change form.

• Mass cannot be created nor destroyed, it can only change form.

• Mass can be created or destroyed, it cannot change form.

Tags

NGSS.MS-PS1-5

What is a closed system?

• a system where none of the reactants or products are allowed to escape
• compounds made of thousands of repeating smaller molecules
• the output, or result of a chemical reaction
• occurs when the atoms and molecules of two or more substances rearrange to form new substances

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Fill in the blank:
The law of conservation of mass states that matter cannot be created nor __________________.

• destroyed
• rearranged
• transferred
• changed

Tags

NGSS.MS-PS1-5

In a chemical reaction, the mass of the reactants was 15g.  The mass of the products was 12g.  Did this chemical reaction follow the law of conservation of mass?

• Yes 
• No
• You can't tell with the given infomation 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Measure of the amount of matter 

• mass
• volume
• weight
• density

Tags

NGSS.5-PS1-2

Anything that has mass & takes up space

• gravity
• force
• matter
• volume

Tags

NGSS.MS-PS1-1

Smallest unit of an element

• compound
• atom
• molecule
• product

Tags

NGSS.MS-PS1-1

The law of conservation of mass says substances can neither be _______ nor ___________.

• Built; torn down

• Blended together; separated

• Created; destroyed

• Condensed; extracted

Tags

NGSS.MS-PS1-5

If an ice cube that has a mass of 25 grams melts, it would change to liquid water with a mass of _______ grams.

• 0

• 25

• 30

• 10

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-4

A boiling pot of water on a stove is what type of system

• Closed System
• Open System

Tags

NGSS.MS-PS1-4