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HEAT Vocabulary

Total questions: 9

Worksheet time: 5mins

Name
Class
Date
1.

pressure

a)

force applied per unit area.

b)

force applied across a distance.

c)

mass applied per unit area.

d)

the amount of material per unit volume.

2.

calorimeter

a)

an insulated device used for measuring the amount of heat absorbed or released during a chemical or physical process.

b)

a device used for measuring the volume of gases or liquids.

c)

a tool for calculating the speed of chemical reactions.

d)

a machine for mixing and heating chemicals in controlled conditions.

3.

thermochemistry

a)

the study of heat changes that accompany chemical reactions and phase changes.

b)

the study of plant cells and their organelles.

c)

the science of environmental weather patterns.

d)

the understanding of energy transformations in living organisms.

4.

system

a)

in thermochemistry, the specific part of the universe containing the reaction or process being studied.

b)

a complete set of tools used for laboratory measurements.

c)

an unrelated collection of data points in a random experiment.

d)

a conceptual model of computer software architecture used in simulations.

5.

surroundings

a)

everything in the universe other than the system.

b)

the immediate environment around an object.

c)

the objects located near a particular location.

d)

the external area that directly influences a system.

6.

universe

a)

the system plus the surroundings.

b)

only the system.

c)

only the surroundings.

d)

the entirety of space, including all matter and energy.

7.

enthalpy

a)

the heat content of a system at constant pressure.

b)

the amount of energy released by a system during a reaction.

c)

the total mechanical work performed by a system.

d)

the energy stored in chemical bonds during a process.

8.

enthalpy (heat) of reaction

a)

the change in enthalpy, or the heat absorbed or released, in a chemical reaction.

b)

the energy required to break chemical bonds.

c)

the change in kinetic energy within the reaction.

d)

the measure of reaction spontaneity.

9.

Describe how a calorimeter measures heat.

a)

It measures heat by recording electrical energy changes.

b)

It measures heat by measuring the temperature change in a known mass of liquid.

c)

It measures heat by analyzing radiation levels.

d)

It measures heat by monitoring pressure differences.