Structures
A bridge that uses triangles for support
Truss bridge
The particle theory states that particles are always in motion. In which state of matter do they vibrate in place but do not move freely?
What is solid
Using the particle theory why can't solids expand as much as gases?
Cuz in a solid the particles are very tight and attract each other, while in a gas they can easily move apart.
What is the difference between an element and a compound at the particle level?
Elements contain only one type of atom, while compounds contain atoms of two or more elements chemically bonded.
Big ol....
Red ones
The Golden Gate Bridge is a famous example of this bridge type, where main cables are anchored at both ends and smaller cables hang vertically to support the deck.
What is a Suspension bridge
When thermal energy is added to a substance, the particles gain kinetic energy. This causes what two changes in the behavior of the particles?
They move faster and spread apart like good boys.
Why does wrapping a hot drink in a thick towel keep it warm for longer?
Because the towel acts as an insulator, slowing down the transfer of heat to the surrounding air.
This bridge type relies on a horizontal beam supported at each end, and it experiences compression on the top and tension on the bottom.
What is a Beam bridge
The particle theory explains that all matter is made up of particles too small to be seen. This branch of science studies those particles and how they behave.
What is chemistry
Why is there no conduction or convection happening in space?
Because space is a vacuum and has no particles to transfer energy through contact or flow?
Explain why mixtures can be separated physically but compounds cannot.
Mixtures are combined physically without chemical bonds, so components retain their properties and can be separated by physical methods.
This type of bridge uses a structure made of interconnected triangles to distribute loads efficiently and is known for its high strength-to-weight ratio.
What is a truss bridge?
When a solid is heated and becomes a liquid, the phase change is called melting. According to particle theory, what happens to the forces between the particles during this process?
They weaken/become less effective.
Why does putting your hand in water at 40°C feel warmer than air at the same temperature?
because water has a higher thermal conductivity and transfers more heat to your skin
In an arch bridge, the outward force pushing against the sides of the arch is called this, and it must be resisted by strong supports called abutments.
What is thrust?
According to the particle theory, substances can look different in each state of matter because of differences in this, which refers to how closely packed and how strongly particles are held together.
Particle arrangement or particle interaction. (Imagine not getting this right)
Why does ice stay at 0°C while it’s melting, even though it’s absorbing heat?
Because the heat is being used to break the bonds between particles, not to raise the temperature?