Physical Properties

The boiling point of water is when it reaches 100 degrees Celsius, at this temperature water changes from a liquid to a gas state.

Solids have a specific volume and shape because their particles are closely packed together and have a strong attraction to one another, leading to a stable, rigid structure.

The freezing point of water is the temperature at which water changes from a liquid to a solid state, which is 0 degrees Celsius.

Solids have both specific volume and shape, gases have neither specific volume nor shape, and plasma is a state of matter where atoms have been ionized.

A thermometer is specifically designed to measure temperature and not any other physical quantity such as pressure, distance, or humidity.

Gas is known for its ability to fill any container it is placed in, taking the shape of the container and expanding to fill the volume. The particles in a gas have high kinetic energy and move freely in all directions, leading to their lack of specific volume or shape.

A balance scale is specifically designed to measure the mass of an object by comparing it to known weights on the opposite side of the scale. It is not used for measuring temperature, time, or volume.

A mixture is different substances combined together, rather than a single substance or a specific state of matter like liquid or gas.

Magnets are known to attract iron or steel due to their magnetic fields. This property allows them to be used in various applications such as separating a mixture of sand and iron filings.

A solution is specifically a mixture where the different substances are evenly distributed throughout.

An insulator is a material that prevents the movement of electricity or heat, as opposed to conducting or amplifying it.

Dissolving refers to the process of completely mixing one substance into another to form a uniform solution.

A conductor in the context of science refers to a material that allows the easy flow of heat or electricity through it, unlike insulators which block or inhibit the flow. It is important to differentiate this usage from other common meanings of the word 'conductor.'

Physical properties are characteristics of a substance that can be measured or observed without changing the substance itself.

A filter is commonly used to separate particles based on size, not necessarily related to air cleaning, taste improvement, or UV ray blocking.

Mass is different from weight as it is the measure of the amount of matter in an object, not the force of gravity acting on it. It is typically measured in grams, whereas weight is measured in newtons. Volume refers to the amount of space an object occupies, and density is the mass per unit volume of a substance.

A chemical change involves the formation of a new substance with different properties, whereas physical changes involve alterations in the state, shape, or size of a substance without changing its chemical composition.

Buoyancy refers to the ability or tendency of an object to float in a fluid due to the upward force exerted by that fluid. It is not related to the weight of an object, the force of gravity, or the resistance of an object to change its motion.

Physical changes involve alterations in the physical properties of a substance without changing its chemical composition. Signs of physical change include changes in size, shape, or state of matter, such as from liquid to solid, solid to liquid, or liquid to gas.

Chemical changes involve the rearrangement of atoms to form new substances, resulting in the release of heat or light, the formation of bubbles, and a change in color.