MP 2 Quarterly Review Part 1

What does the Law of Conservation of Mass state?

• Matter cannot be created or destroyed in a chemical reaction.

• Matter can only be destroyed in a chemical reaction.

• Matter can only be created in a chemical reaction.

• Matter can be created and destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

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

• Reactants
• Products 
• Yields 
• Chemical Equation 

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

• Reactants
• Products 
• Yields 
• Chemical Equation 

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• No!

Tags

NGSS.MS-PS1-5

Is the following equation balanced?
2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O

• yes
• no

Tags

NGSS.MS-PS1-5

Which of the following models best demonstrates a balanced chemical equation?

• F

• G

• H

• J

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is glass breaking a chemical or phyiscal change?

• chemical
• physical

Is a a rusting bicycle a chemical or physical change?

• chemcial
• physical

Tags

NGSS.MS-PS1-2

A 5th grade student places baking soda in a cup. The student then adds vinegar to the cup. The student collects the data below from the experiment. Based upon the results of the experiment, which statement BEST describes whether the change is a physical or chemical change.

• The data concludes that a physical change has occurred because it had an increased change in temperature, which resulted in the liquid to start bubbling.

• The data concludes that a physical change has occurred because the color of the liquid changed when you mixed two materials.

• The data concludes that a chemical change has occurred because there was formation of bubbles when the materials reacted to each other.

• The data concludes that a chemical change has occurred because mixing two substances together will always result in a reaction.

Tags

NGSS.MS-PS1-2