Changes and Conservation of Mass

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Changes and Conservation of Mass - Review Quiz

This review quiz is all about changes (chemical and physical changes) and the concept of conservation of mass. Do it as many times as you need to help you review!

A physical reaction is one where *

1 point

The molecules change throughout the reaction

The molecules stay the same throughout the reaction

The elements change throughout the reaction

The mass changes throughout the reaction

A chemical reaction is one where *

1 point

The molecules change throughout the reaction

The molecules stay the same throughout the reaction

The elements change throughout the reaction

The mass changes throughout the reaction

What type of reaction is being shown below? *

1 point

Chemical Reaction

Physical Reaction

What type of reaction is being shown below? *

1 point

Chemical Reaction

Physical Reaction

Check off all the signs of a chemical reaction you can identify below. *

2 points

Colour change

Production of a gas

Production of heat

Production of light

Production of a precipitate

Required

Check off all the signs of a chemical reaction you can identify below. *

2 points

Colour change

Production of a gas

Production of heat

Production of light

Production of a precipitate

Required

Check off all the signs of a physical change you can identify below *

1 point

Change of state

Change of shape

Dissolving

Required

Check off all the signs of a physical change you can identify below *

1 point

Change of state

Change of shape

Dissolving

Required

Check off all the signs of a physical change you can identify below *

1 point

Change of state

Change of shape

Dissolving

Required

Check off all the signs of a physical change you can identify below *

1 point

Change of state

Change of shape

Dissolving

Required

You add 10 grams of sugar to 200 grams of warm water and stir to make a sugar solution, what mass of solution will you have? *

1 point

200 g

210 g

250 g

Why is mass conserved during chemical reactions and physical changes? *

1 point

Gases have no mass

Atoms are not created or destroyed

Solids weigh more than liquids

If 500 g of ice melts, what mass of liquid water is produced? *

1 point

500 g

1 kg

488 g

If 6 g of carbon reacts with 16 g of oxygen, what mass of carbon dioxide will be produced? carbon + oxygen → carbon dioxide *

1 point

16 g

22 g

96 g

Why does the mass of a wooden log decrease when it is burned? *

1 point

Ash doesn't have any mass

Burning stuff always makes them lighter

One of the products is a gas (carbon dioxide) and it escapes into the atmosphere

What type of reaction is being shown below? *

1 point

Chemical Reaction

Physical Reaction

What is the purpose of the balloon? *

1 point

To look pretty

To trap the gas produced

To get blown up for a birthday party

If the balloon was removed from this experimental set up, what would happen to the mass? *

1 point

It would stay the same

It would increase as the gas is heavier than the liquid

It would decrease as the gas is escaping into the atmosphere

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