Temas Selectos de la Fisica

What are atoms?. Large visible particles. Very small particles that make up matter. Only found in gases. Types of energy.

What is formed when atoms of different kinds combine?. Elements. Solids. Molecules. Fluids.

Which state of matter has a definite shape and volume?. Liquid. Gas. Plasma. Solid.

Why do solids have a fixed shape?. Weak intermolecular forces. Strong intermolecular forces. No molecules. High temperature.

Which state of matter takes the shape of its container but has a fixed volume?. Solid. Gas. Liquid. Plasma.

What is true about gases?. They have fixed volume. They have strong attraction forces. They have no definite shape or volume. Their molecules do not move.

In which state do molecules move the fastest?. Solid. Liquid. Gas. Ice.

What is plasma?. A low-energy state. A solid with high density. A high-energy ionized state of matter. A type of liquid.

What do liquids and gases have in common?. Fixed shape. Fixed position of molecules. Ability to flow. Strong intermolecular forces.

What are fluids?. Only gases. Only liquids. Solids and liquids. Liquids and gases.

What is density?. The speed of molecules. The relationship between mass and volume. The size of an object. The temperature of a substance.

What is the correct formula for density?. p = V/m. p = m × V. p = m / V. p = m + V.

What unit can be used for mass?. m³. kg. L. cm³.

What unit can be used for volume?. kg. g. m³. N.

A substance with high density has: Low mass and high volume. High mass and low volume. No mass. Only volume.

What determines the state of matter of a substance?. Color and size. Arrangement and motion of its molecules. Only temperature. Only mass.

In which state are intermolecular forces the weakest?. Solid. Liquid. Gas. Plasma.

Why can liquids flow?. Their molecules are fixed. They have no mass. Their molecules can move past each other. They have strong shape.

Which statement is TRUE about gases?. They have a definite volume. Their molecules move slowly. They expand to fill any container. They have strong intermolecular forces.

Plasma differs from gas because: It has lower energy. Its particles are ionized. It has a fixed shape. It cannot move.

Which of the following is NOT a fluid?. Water. Air. Oil. Ice.