Physical or Chemical?

Question

Label the following physical or chemical and property or change.

Reacts with Carbon Dioxide

Melting Point at 40 degrees Celsius

React with Acid Rain

Density of Water = 1.0 g/mL

Malleability

Color

Dissolves in water

Reacts with water

Answer 1

react means it is chemical,  also burning is reacting,  the rest are phys

Answer 2

1..'Reacts with' indicates a Chemical change to the formation of new substances..

2..'Melting (Fusion)', indicates a change of State only (solid to Liquid)...Physical Change.

3..As for #1, Chemical change.

4..Density is a Physical Property. (Mass/Volume).

5..Malleability..Physical Change.

6..Colour..Physical Property.

7..Physical Property.

8..As for #1 again, Chemical Change.

9..Burning Methane gas ...As for #1, Combustion reaction forming CO2 gas and H2O Water vapour, with Heat and Light also produced.

Answer 3

Reacts with Carbon Dioxide - Chemical Property

Melting Point at 40 degrees Celsius - Physical Property

React with Acid Rain - Chemical Property

Density of Water = 1.0 g/mL - Physical Property

Malleability - Physical Property

Color - Physical Property

Dissolves in water - Chemical Property

Reacts with water - Chemical Property

Burning methane produces water and carbon dioxide - Chemical Property if you're not burning it...Chemical Change if the burning is occurring.