What does the activity with potassium permanganate and water show us about matter?
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Kinetic energy of molecules is directly proportional to
What is the temperature at which a solid melts to become a liquid at atmospheric pressure called?
What do we call the change of state directly from solid to gas without becoming a liquid first?
State whether the following statement is True or False:
Matter is made up of particles that keep dividing themselves into smaller and smaller particles.
A compound is a _______ substance made up of _______.
What happens when you pour some acetone (nail polish remover) on your palm? The particles gain energy from your palm or surroundings and _______ causing the palm to feel cool.
State whether the following statement is True or False:
On increasing the temperature of solids, the particles start vibrating with greater speed.
State whether the following statement is True or False:
Evaporation happens faster with an increase in wind speed.
Which of the following statements is uncommon for both elements and compounds?
State whether the following statement is True or False:
All solids have a definite shape, distinct boundaries, and fixed volumes, making them easy to compress.
State whether the following statement is True or False
Particles of matter are always at rest and never move.
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