What are the 4 main ideas of the particle model?
The particle model has four main tenets:
- All substances are made of particles.
- The particles are attracted to each other (some strongly, others weakly).
- The particles move around (have kinetic energy).
- As temperature increases, the particles move more (their kinetic energy increases).
What is a particle model diagram?
Elements and compounds can be represented using particle diagrams, which is a box in which colored balls are draw to represent atoms or molecules. • These diagrams can represent elements and compounds, as well as their molecular composition by the types of balls and how they are connected.
What is the process of burning a fuel?
Burning a fuel is called combustion, a chemical process that we study in middle or high school. Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer.
What are the 5 main ideas of particle theory?
Terms in this set (5) Particles have space between them. Particles are always moving. Particles move faster and get farther apart when heated. Particles are attracted to each other.
How are particle models used?
Scientists find the particle model useful for two reasons. First, it provides a reasonable explanation for the behaviour of matter. Thus, the particle model can be used to explain the properties of solids, liquids, and gases. It can also be used to explain what happens in changes of state (Figure 1 on the next page).
Why is the particle model a model?
First, it provides a reasonable explanation for the behaviour of matter. Second, it presents a very important idea—the particles of matter are always moving. Matter that seems perfectly motionless is not motionless at all. Thus, the particle model can be used to explain the properties of solids, liquids, and gases.
What is the particle model of electricity?
Students summarize the particle model of electricity as follows: • Two types of charge particles, positive (protons) and negative (electrons), exist. Charge cannot be created or destroyed — charge is conserved. Positive charges are fixed and negative charges are free to move.
What is the process called when fossil fuels are burned?
If you drive a car, heat your home, turn on a light, or enjoy a good backyard barbecue, the energy you are using most likely comes from burning fossil fuel hydrocarbons, a process called combustion the process of burning something; example is when a substance such as wood, coal, or gas reacts with oxygen to produce …
What is the chemical equation for burning fossil fuels?
2 CO + O2 7 2 CO2. The burning of fossil fuels occurs at temperatures of several hundreds of degrees.
Why is the particle model important?
Scientists find the particle model useful for two reasons. First, it provides a reasonable explanation for the behaviour of matter. Second, it presents a very important idea—the particles of matter are always moving. Thus, the particle model can be used to explain the properties of solids, liquids, and gases.
What are the 6 particle theory of matter?
Terms in this set (6) All matter is made of particles. Particles have space between them. Particles are always moving. Particles are attracted to each other.
What are particles made from biomass burning?
Particles produced from biomass burning are primarily composed of organic material and black carbon (Andreae and Merlet, 2001).
What is the burning profile of solid biomass?
Since most solid biomass fuels have around 80% volatile content and generally less than 20% “fixed carbon”, the burning profile differs somewhat from that of coal. Biomass combustion in furnaces designed for pulverized coal therefore needs careful consideration to ensure effective operation.
How do particle optical properties evolve with photochemical aging of smoke?
There is limited understanding of how particle optical properties – especially the contributions of black carbon (BC) and brown carbon (BrC) – evolve with photochemical aging of smoke.
Are biomass-burning particles harmful to humans?
Biomass-burning-derived particles (BB particles, for short) also have substantial negative impacts on human health globally (Lelieveld et al., 2015), especially when produced as a result of indoor combustion associated with residential cooking and heating.