posted by kimberly

can you please tell me which catergory these belong in chemical or physical property?

1. arrangement of particles have changed
2. absorb or release. energy(endothermic/exothermic reactions)
3. change in appearance only.
4. cant be undone.
5. size and shape may change

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Chemistry

    Atom-Particle that cannont be divided in half becasue it is in its smallest form. Reactants-Substances that exist before the reaction begins. Endothermic Reaction-take in, or absorb heat energy. Exothermic Reaction- Release Heat energy …
  2. CHEM

    Evaporation is an A.endothermic B.exothermic process, because when a substance evaporates it must A. absorb B. release energy to(from) its surroundings.
  3. Chem Lab

    Am I right? Classify the following properties of sodium metal as physical or chemical: •Silver metallic color—physical property •Turns gray in air—physical property •Melts at 98º C-melting point is physical property •Reacts
  4. Chemistry

    1. The delta Hf of an element in its standard state is defined to be a) 0 kJ/mol b) 10 kJ/mol c) -10 kJ/mol d) greater than 0 kJ/mol e) a unique value for each element I am assuming its a?
  5. science

    1. The ability of an apple to change color when exposed to air is a ____. (1 point)physical property chemical property physical change chemical change 2. Which of the following is NOT a possible sign of a physical change?
  6. Chem please help

    Which of the following correctly describes the net energy change during a reaction?

    How does temperature change during a chemical reaction. (Note: it has to be a Endothermic and exothermic reactions) Thanks
  8. biology (check answers)

    1. How do endothermic and exothermic reactions differ?
  9. biology (check answers)

    1. How do endothermic and exothermic reactions differ?
  10. Chemistry

    Label the following changes as CHEMICAL or PHYSICAL change 1. Fat reacting with sodium hydroxide 2. Chemical A originally is buoyant in water; after it mixed with HCI, the new substance now sinks in water Label the following reactions …

More Similar Questions