Honors Chemistry Semester 2 Exam Review

The average kinetic energy of the particles in a sample of matter is measured as the —

• kinetic force

• thermal rate

• reaction rate

• temperature

Tags

NGSS.HS-PS3-2

What type of energy is stored in chemical bonds?

• Chemical potential energy

• Thermal potential energy

• Chemical kinetic energy

• Thermal kinetic energy

The more kinetic energy there is in a sample of matter, the —

• more energy is absorbed as heat

• more energy is given off as heat

• lower the temperature

• higher the temperature

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

Calculate the heat transferred when 440 g of water cools from 87.2°C to 50.0°C. (C = 4.18 J/g°C)

• 68000 J

• 2.83 J

• -2.83 J

• -68000 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

If 238 J of heat is absorbed by a sample of metal with a mass of 40.7 g, and it raises the temperature from 20.0°C to 32.4°C, what is the specific heat capacity of the metal?

• 2.34 J/g°C

• 0.472 J/g°C

• 6.13 J/g°C

• 0.163 J/g°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?

• 25g
• 30g
• 20g
• 50g

Tags

NGSS.HS-PS3-4

If a reaction is endothermic, which statement below best describes the energy of the products and reactants in the reaction?

• Energy is given off during the reaction, making the energy of the products greater than the energy of the reactants.

• Energy is given off during the reaction, making the energy of the reactants greater than the energy of the products.

• Energy is absorbed during the reaction, making the energy of the reactants greater than the energy of the products.

• Energy is absorbed during the reaction, making the energy of the products greater than the energy of the reactants.

∆H is positive

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

The products contain more energy than the reactants

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

Exothermic reactions are reactions that

• release heat
• do not involve heat
• absorb heat
• take place instantaneously

Tags

NGSS.HS-PS1-4