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If you have a furnace in your house that burns natural gas t…

If you have a furnace in your house that burns natural gas to produce heat why is it important for the safety of your family to make sure the furnace is getting an adequate supply of oxygen?  (2 marks)

Published September 4, 2024
Categorized as Uncategorized

The softest mineral on Mohs’ hardness scale is ____. 

The softest mineral on Mohs’ hardness scale is ____. 

Published September 4, 2024
Categorized as Uncategorized

Geologists believe that 200 to 225 million years ago all the…

Geologists believe that 200 to 225 million years ago all the continents were combined into one gigantic supercontinent called:    

Published September 4, 2024
Categorized as Uncategorized

In a single displacement reaction to determine if magnesium,…

In a single displacement reaction to determine if magnesium, Mg, would replace calcium, Ca, in calcium chloride, CaCl2, you would:

Published September 4, 2024
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Describe (or draw) what the Bohr-Rutherford diagram for an a…

Describe (or draw) what the Bohr-Rutherford diagram for an atom of fluorine would look like (what is in the centre and number of electrons in each orbit or energy level).  (2 marks)

Published September 4, 2024
Categorized as Uncategorized

Name the following hydrocarbons. In case you can’t see them…

Name the following hydrocarbons. In case you can’t see them well, that is a double bond in b) and a triple bond in c).   (3 marks)

Published September 4, 2024
Categorized as Uncategorized

The four visible lines of hydrogen’s emission spectrum are a…

The four visible lines of hydrogen’s emission spectrum are a result of:

Published September 4, 2024
Categorized as Uncategorized

Explain why an alcohol, such as ethanol, is soluble in water…

Explain why an alcohol, such as ethanol, is soluble in water but hydrocarbons such as alkanes are not soluble in water.  (4 marks)         

Published September 4, 2024
Categorized as Uncategorized

isotopes are atoms:

isotopes are atoms:

Published September 4, 2024
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Bohr’s model of the atom was the first model that:

Bohr’s model of the atom was the first model that:

Published September 4, 2024
Categorized as Uncategorized

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