The water molecules in the picture show what they look like under a microscope in each state. Choose the most fitting alternative:
solid / liquid / gas
gas / solid / liquid
liquid / solid / gas
solid / gas / liquid
Reversible change means you can change a substance back to the way it was before the change of state happened. Non-Reversible is the other way around. Choose the best alternative for the pictures.
reversible, non-reversible, non-reversible, non-reversible
non-reversible, reversible, reversible, non-reversible
non-reversible, reversible, non-reversible, reversible
reversible, reversible, reversible, non-reversible
What is the freezing point of water?
100 ºC
5 ºC
0 ºC
What is the boiling point of water?
100 ºC
50 ºC
80 ºC
0 ºC
_____________ describes how much an object feels or can bend before it breaks.
Hardness
Texture
Strength
Flexibility
______________ is how much an object can float. An ice cube floats in water, but a penny doesn't.
Strength
Buoyancy
Flexibility
Hardness
______________ describes how an object feels when you touch it.
Flexibility
Texture
Buoyancy
Hardness
___________ is how strong or weak an object is.
Hardness
Strength
Flexibility
Texture
_________________ describes the ability of an object to be scratched; glass can be scratched, but a diamond cannot.
Strength
Buoyancy
Hardness
Flexibility
Ice cream ___________ is a change from the _____ state to the _____ state.
melting / solid / liquid
boiling / liquid / solid
the ___________ kettle in the image is a change from the _______ state to the ________ state.
freezing / gas / liquid
boiling / liquid / gas
