- Is it true that heat depends only on how fast molecules vibrate?
- Does polystyrene keep things warm?
- Is everything in a room the same temperature?
- What happens to the temperature of water while it is boiling?
- Does Styrofoam keep heat out?
- What is the relationship of temperature to heat?
- Can you have 2 things that are the same temperature but with different amounts of heat in them?
- What is heat dependent?
- Why does polystyrene feel warm?
- What is the lowest possible temperature?
- Which has higher temperature 1 cup of boiling water or 1 teapot of boiling water?
- What is used to measure heat?
- Why Polystyrene is a good insulator?
- Why do some objects feel warmer than others at the same room temperature?
- Why do different objects have different temperatures?
Is it true that heat depends only on how fast molecules vibrate?
The faster molecules vibrate, the less heat they give off.
Temperature measures the average kinetic energy per molecule.
Heat depends only on how fast molecules vibrate..
Does polystyrene keep things warm?
Styrofoam keeps things warm because it’s made out of polystyrene foam, which has many trapped pockets of air. Air doesn’t allow heat to pass through it too well, so the air pockets in styrofoam insulate whatever is in the container and prevent heat from escaping.
Is everything in a room the same temperature?
The sense of touch allows us to recognise temperature differences of objects in the same room which we could easily assume should all be at that same room temperature. But this is not the case. … The temperature of an object is dependant on its heat capacity and the rate at which heat can be removed from its surface.
What happens to the temperature of water while it is boiling?
When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. … Therefore the temperature of the liquid remains constant during boiling. For example, water will remain at 100ºC while boiling. A graph of temperature vs.
Does Styrofoam keep heat out?
Styrofoam is the trademarked name for polystyrene foam. This petroleum-based plastic is lightweight and serves as an effective insulator. As such, it does a great job of keeping heat out of things like coolers.
What is the relationship of temperature to heat?
Explanation: heat is the total energy of the motion of the molecules inside the object or particle, whereas Temperature is merely a measure of this energy. The relationship could be, the more heated an object is there higher the temperature the object will have.
Can you have 2 things that are the same temperature but with different amounts of heat in them?
A net flow of heat cannot occur by conduction from one body to another if they are at the same temperature. Internal energy can be expressed as ΔU=fNRT/2, N being the number of moles of ideal gas, f the degrees of freedom of the gas. Thus, 2 different gases can have 2 different internal energies for same temperature.
What is heat dependent?
The heat capacity is an extensive property that describes how much heat energy it takes to raise the temperature of a given system. … Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.
Why does polystyrene feel warm?
They do not feel equally cold because they carry heat away from your hand at different rates. Styrofoam is an insulator—a very poor conductor of heat. When your hand touches the Styrofoam, heat flows from your hand to the Styrofoam and warms the Styrofoam surface. … The Styrofoam feels warm.
What is the lowest possible temperature?
Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There’s a catch, though: absolute zero is impossible to reach.
Which has higher temperature 1 cup of boiling water or 1 teapot of boiling water?
Answer. Both the same temperature. If both are boiling water, they both must be at 100 degrees Celsius. The cup will come to boiling point faster than the teapot but still once they are both boiling both are at the same temp.
What is used to measure heat?
Two classes of instruments are employed for the measurement of heat, namely, thermometers and pyrometers. Thermometers are only employed to measure comparatively low temperatures, and we shall confine our remarks entirely to this class in the present article.
Why Polystyrene is a good insulator?
Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can’t flow through them. The same idea is used to keep the inside of buildings warm.
Why do some objects feel warmer than others at the same room temperature?
A: In general, metals feel colder or hotter to the touch than other materials at the same temperature because they’re good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects.
Why do different objects have different temperatures?
Warmer objects have faster particles and higher temperatures. If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer. Heat is the transfer of thermal energy between objects that have different temperatures.