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True or false? Air has no weight. When particles are heated they stay the same size. When ice is heated its particles melt. Steam is hot air. All particles are the same size. The bubbles in boiling water are made of water vapour. All substances are made of particles. Particles in a liquid are larger than in a solid.

Misconceptions All substances are made of particles. Everything is made of particles. These particles make up the substance, they are the substance. The particles of wax make up the candle. How would the arrangements of particles be different in the melted wax? LINK What is between the particles in the solid wax?

Misconceptions There is nothing between particles. Particles in solids, liquids and gases have nothing between them. This is a diagram of a gas. The particles drawn are the gas. The space between these particles contains nothing.

Misconceptions Particles of the same substance are the same in a solid, liquid and gas. Particles of water, for example, are exactly the same in ice, water and water vapour. They do not change size or shape, only the arrangement of the particles changes.

Misconceptions Particles are NOT all the same size. Particles of the same substance are the same size. Particles of different substances are different sizes. For example: All water molecules are the same size. Water Glucose is a type of sugar. A particle of glucose is much larger than a particle of water. About 5. 5 times larger.

Misconceptions Particles are much smaller than cells. Particles are extremely small. Imagine a tower of 3, 760 double decker buses stacked on top of each other. If a carbon particle is the same size as a football, then a red blood cell would be so big you would be able to fit the tower of buses inside it.

Misconceptions Bubbles in boiling water contain water vapour. Bubbles in boiling water contain steam. The molecules of water have gained enough energy to overcome the forces between particles. The water has become a gas. We call this gas ‘steam’. Bubbles in boiling water do not contain air.

Misconceptions Melting and dissolving are different. Heating is needed for melting to occur. During heating a substance changes state from a solid to a liquid. Only one substance is needed. When a substance is dissolved in a solvent it forms a solution. Two substances are needed, the solvent and the solute.

Misconceptions Air has mass and therefore a weight. Look at the two balloons attached to the ruler. They are identical and balanced. What will happen if one of the balloons is burst? LINK