Question 4 of 5 The photograph shows a glue gun. This tool heats a solid
stick of glue until it becomes a liquid.
Which two characteristics of the matter change?
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D. Type of substance
Answer quick!

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability

Can anyone answer these questions? ? i need it before 1: 00pm today