A substance changes state from solid to liquid. What has happened?

O Aphysical change

O A chemical change

O A chemical reaction

The creation of matter

Why should we not were synthetic clothes while working in kitchen?

A saturated solution is made by dissolving a 23.5g of solute/100.0g of water at 20°. How many grams of solute would be needed to dissolve in 65.0g of water to make a saturated solution?

When two or more covalently bonded atoms combine chemically, we refer to the physical result as?

Molten gallium reacts with arsenic to form the semiconductor, gallium arsenide, GaAs, used in light-emitting diodes and solar cells: Ga (I) + As (s) GaAs (s) a. If 4.00 g of gallium is reacted with 5.

At what temperature will. 100 moles of CO2 occupy 2.00L at 1.31 atm?

Name 5 types of alloys

What is the 3 types of matters

A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower? gravity phototropism presence of nutrients presence of water

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?