Which investigation could demonstrate a chemical property of iron?(1 point)

Question

Responses

Performing an investigation to show how iron can conduct electricity and heat.
Performing an investigation to show how iron can conduct electricity and heat.

Performing an investigation to show how iron reacts with oxygen to form rust.
Performing an investigation to show how iron reacts with oxygen to form rust.

Performing an investigation to show how iron can be flattened into sheets.
Performing an investigation to show how iron can be flattened into sheets.

Performing an investigation to show how iron can be drawn into a wire.
Performing an investigation to show how iron can be drawn into a wire.

Read the information below about the element of magnesium and its properties.
Magnesium (Mg) can combine with hydrobromic acid (HBr) to produce magnesium bromide (MBr 2) and hydrogen (H2) gas. Magnesium is a shiny solid with an approximate density of 1.738 g/mL. it burns with a bright white color that can be used in fireworks.
Which option describes a chemical property of magnesium?

(1 point)
Responses

Its density is 1.738 g/mL.
Its density is 1.738 g/mL.

It is a shiny solid.
It is a shiny solid.

It reacts with HBr.
It reacts with HBr.

Its chemical symbol is Mg.

Answer 1

For the first question about demonstrating a chemical property of iron, the correct response is:

Performing an investigation to show how iron reacts with oxygen to form rust.

This demonstrates a chemical property because it involves a chemical reaction that modifies the substance.

For the second question regarding a chemical property of magnesium, the correct response is:

It reacts with HBr.

This describes a chemical property because it involves magnesium undergoing a chemical reaction with hydrobromic acid. The other options describe physical properties.