The answer is "a conductor."

Some types of matter transfer energy more easily than others. These substances are called “conductors.” An electrical conductor is a substance in which electrical charge carriers, usually electrons, move easily from atom to atom with the application of voltage. Conductivity, in general, is the capacity to transmit something, such as electricity or heat. Some examples of conductors are copper, steel, gold, aluminum, and brass. If a substance does NOT transfer energy efficiently, it is called an insulator. Some common insulators are: Glass, Air, Plastic, Rubber, Porcelain, and Wood.

The answer is "A spoon in a cup of hot soup gets warmer."

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is "Hot air balloons rise up"

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is "you feel warm around a fire."

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

the answer is "from warmer objects to colder objects"

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is "the kinetic energy of its particles increases."

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is 100 kg of steel because more mass will require more energy to bring to a constant temperature.

The answer is "high because the temperature is high."

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is 200 mL of cold water because no hot water was added, and the test was not performed.

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink

The answer is, "as thermal energy increases, kinetic energy of the particles increases."

When heat energy is transferred to objects, the kinetic energy of the particles changes. Heat energy always moves towards equilibrium, meaning that hotter objects transfer their heat to colder objects, and at an atomic level kinetic energy is transferred from faster moving particles to slower moving particles.

There are three types of heat transfer, conduction, convection, and radiation.
Conduction: transfer of heat between two atoms that are touching
Radiation: transfer of heat by electromagnetic waves (light) where particles are not touching
Convection: transfer of heat by the movement of fluids (liquid or gas) where hot particles rise and cold particles sink