During an exothermic reaction, heat content in the surroundings increases because

the energy contained in the products is lower than the reactants

heat energy is destroyed during reactions

the reaction absorbs heat energy

the energy contained in the reactants is lower then the products

The diagram represents two solids and the temperature of each. What occurs when the two solids are placed in contact with each other?

Heat energy flows from solid B to solid A. Solid B decreases in temperature.

Heat energy flows from solid A to solid B. Solid A decreases in temperature

Heat energy flows from solid A to solid B. Solid A increases in temperature

Heat energy flows from solid B to solid A. Solid B increases in temperature.

The law of conservation of energy states that

in any chemical or physical change, energy cannot be created or destroyed, only changed in form.

heat changes occur during chemical and physical changes.

energy is the capacity to do work or to supply heat

there are two types of energy, kinetic and potential

A gallon jug of water with the same temperature as a cup of water, has more thermal energy than the cup of water. Why?

because its temperature is higher

Water has a specific heat of 4.18 J/gxC and iron has a specific heat of 0.45 J/gxC. Which would heat up faster in the sun, 5.0 grams of water or 5.0 grams of iron? Why?

Iron because it has a lower specific heat

Iron because it has a higher specific heat

Water because it has a lower specific heat

Water because it has a higher specific heat.

Thermochemistry

Quiz

•

Chemistry

•

10th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS3-4, HS-PS1-4, HS-PS3-1

+2

Standards-aligned

Carolyn Bartek

Used 60+ times

FREE Resource

internal energy

work

Tags

NGSS.HS-PS1-4

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A reaction that feels cold to the touch

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the amount of heat necessary to raise 1gram of a substance 1^oC

The part of the universe that is being studied

The sum of all the possible forms of energy of all atoms, molecules and ions in a system

The ability to do work

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the energy transferred between objects

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30 questions

If a reaction releases heat to the surroundings it is __________

If a reaction has a ΔH = - 25 J

A reaction that feels cold to the touch

a reaction where products are lower in energy than reactants

the amount of heat necessary to raise 1gram of a substance 1oC

The part of the universe that is being studied

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Energy associated with motion

the energy transferred between objects

Create a free account and access millions of resources

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the amount of heat necessary to raise 1gram of a substance 1^oC