Can you tell
On the basis of the questions given
below, discuss the results of the activities
listed above.
In which direction did the piece of chalk
fall?
Where did the water in the glass show a
bulge ?
→ What effect did the movement have on
the things attached to the keyring?
What happened to the water in the
container and the mixer?
Which forces could be operating in
activities listed above?
Answers
Answer:
Describe the basic properties of each physical state of matter: solid, liquid, and gas
Define and give examples of atoms and molecules
Classify matter as an element, compound, homogeneous mixture, or heterogeneous mixture with regard to its physical state and composition
Distinguish between mass and weight
Apply the law of conservation of matter
Matter is defined as anything that occupies space and has mass, and it is all around us. Solids and liquids are more obviously matter: We can see that they take up space, and their weight tells us that they have mass. Gases are also matter; if gases did not take up space, a balloon would stay collapsed rather than inflate when filled with gas.
Solids, liquids, and gases are the three states of matter commonly found on earth (Figure 1). A solid is rigid and possesses a definite shape. A liquid flows and takes the shape of a container, except that it forms a flat or slightly curved upper surface when acted upon by gravity. (In zero gravity, liquids assume a spherical shape.) Both liquid and solid samples have volumes that are very nearly independent of pressure. A gas takes both the shape and volume of its container.