1.in what state of matter are the particles closets together?
2.in what states of matter ha an indefinite shape but not definite volume
3.what state of matter do particles move most freely ?
4.give an ex of chemical change of paper
5.what is the different between a physical and chemical change
please help me if you have a heart
For 1,2,3, Google, "movement of particles in solids, liquids, gases"
For 4, burning paper is a chemical change.
5. Google "difference between physical and chemical change."
thanks
1. The particles in a solid state of matter are closest together. To understand this, we can look at the arrangement of particles in different states of matter. In a solid, particles are tightly packed and have strong intermolecular forces holding them together, which results in a fixed shape and volume.
2. The states of matter that have an indefinite shape but not a definite volume are liquids. In a liquid, the particles are close together, but they have enough energy to move around and slide past one another, allowing liquids to take the shape of their container. However, they do not expand to fill the entire container, so they have a definite volume.
3. The state of matter in which particles move most freely is gas. In a gas, the particles are widely spaced and have high kinetic energy. This allows them to move around quickly and independently, filling the entire container and taking its shape. Gases have neither a definite shape nor a definite volume.
4. An example of a chemical change involving paper is when it undergoes combustion or burning. When paper is exposed to heat and a source of ignition, it reacts with oxygen in the air, breaking down its complex organic molecules into simpler compounds, such as carbon dioxide, water vapor, and ash. This chemical reaction changes the composition of paper, resulting in a new substance.
5. The main difference between a physical change and a chemical change lies in the composition of the substance. In a physical change, the substance remains the same chemically, but its physical properties may change, such as shape, size, or state of matter. Examples of physical changes include melting, freezing, and dissolving. In contrast, a chemical change involves the formation of new substances with different chemical properties. Chemical changes are usually irreversible and often involve the breaking and forming of chemical bonds. Examples of chemical changes include burning, rusting, and digestion.