Chemical formulae and conservation of mass

Define conservation of mass and apply this chemical equation.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the chemical formula for carbon dioxide?

1/6

Q2.Which statement is correct about the formula below?K2SO4

2/6

Q3.Matter can be solid, liquid or gas. Oxygen is a at room temperature.

Fill in the blank.

3/6

Q4.What is the mass of an object?

4/6

Q5.100 g of ice cream melts. What is the mass of the liquid ice cream?

5/6

Q6.60 g of calcium reacts with 50 g of oxygen. How many grams of calcium oxide are produced?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the chemical formula for carbon dioxide?

1/6

Q2.Which statement is correct about the formula below?K2SO4

2/6

Q3.Matter can be solid, liquid or gas. Oxygen is a at room temperature.

Fill in the blank.

3/6

Q4.What is the mass of an object?

4/6

Q5.100 g of ice cream melts. What is the mass of the liquid ice cream?

5/6

Q6.60 g of calcium reacts with 50 g of oxygen. How many grams of calcium oxide are produced?

6/6

Video

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Chemical formulae and conservation of mass

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How many atoms of sulfur are present in the formula below?Li2SO4

1/6

Q2.The law of conservation of mass states ...

Select two (2) boxes

2/6

Q3.20 g of oxygen reacts with 15.5 g of lithium. How many grams of lithium oxide are produced?

3/6

Q4.Aluminium oxide breaks down into aluminium and oxygen. If the reaction takes place on a balance, the mass appears to...

4/6

Q5.A substance contains one silicon atom, three hydrogen atoms and three oxygen atoms. The hydrogen and oxygen form hydroxide ions. What is the correct formula?

5/6

Q6.What is the correct balanced equation for iron (Fe) reacting with oxygen to form iron oxide?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

Chemical formulae and conservation of mass

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.How many atoms of sulfur are present in the formula below?Li2SO4

1/6

Q2.The law of conservation of mass states ...

Select two (2) boxes

2/6

Q3.20 g of oxygen reacts with 15.5 g of lithium. How many grams of lithium oxide are produced?

3/6

Q4.Aluminium oxide breaks down into aluminium and oxygen. If the reaction takes place on a balance, the mass appears to...

4/6

Q5.A substance contains one silicon atom, three hydrogen atoms and three oxygen atoms. The hydrogen and oxygen form hydroxide ions. What is the correct formula?

5/6

Q6.What is the correct balanced equation for iron (Fe) reacting with oxygen to form iron oxide?

6/6

Lesson summary: Chemical formulae and conservation of mass

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This was the final lesson in the unit Atomic structure and the periodic table.

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