chemistry

posted by .

A light green powder is heated in a test tube. A gas is given off, while the solid becomes black. In which classification of matter does the green powder belong? Explain your reasoning.

  • chemistry -

    A compound and the reaction is a decomposition. A compound consists of two or more elements combined.

  • chemistry -

    It is a compound

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Joseph Priestly discovered oxygen when he heated a red powder. This red powder had been prepared by heating mercury in air. a) name th red powder formed when this element is heated in air b) write a word equation to show what happens …
  2. science

    A light green powder is heated in a test tube. A gas is given off and the solid becomes black. In which classification of matter does the green powder belong?
  3. chemistry

    Q: I just did an online chemisty lab for Oxidation States of Manganese and I'm stuck. I have three test tubes that have been prepared as follows: Tube 1- Starting PH 13.82 2 mL of KMnO4 1 mL of NaOH Tube 2- Starting PH 7 2 mL of KMnO4 …
  4. chemistry

    A student adds .137 grams of nickel(II) hydroxide powder to 10.0 L of distilled water at 25C with vigorous stirring. Did all of the powder dissolve?
  5. Science

    * P is a a black powder, which, when fused with a mixture of potassium hydroxide and potassium nitrate and then treated with water yields a green solution. The green solution turn purple when acidified. -identify P, the green solution …
  6. Chem 100 Lab

    A black solid is heated in a tube that is completely evacuated of air. Hydrogen is added to the tube. An orange powder is formed and water vapor is seen on the outside of the tube. Is the original solid an element or compound?
  7. chemistry

    A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occurred during his experiment?
  8. science (chemistry)

    filter paper is a poor material on which to powder a solid before introducing it into a melting tube .explain why?
  9. ap chemistry

    A powder has a mass of 40.0g. When the powder is added to 30.0mL of water, the total volume is 45.0mL. What is the density of the powder
  10. chemistry

    Why is filter paper a poor material on which to powder a solid before introducing it into a melting tube?

More Similar Questions