Yr 10 EAT Energy in Food

By definition, chemical energy is the energy stored in __________.

Tags

NGSS.HS-PS1-4

The unit of Calorie is ______.

Tags

NGSS.HS-PS3-4

1 Calorie = 4.184 ____

The monomer of starch is ________.

The energy produced in cellular respiration is stored in the form of _____.

Tags

NGSS.HS-LS1-7

The unit of specific heat capacity is

• kJ.

• J/(g °C).

• °C/(J g).

• (J °C)/g.

A sample of burning food is used to heat 200 g of water. Calculate the heat energy, in kilojoules, that has been transferred to the water if the temperature of the water increases from 10.0°C to 65.5°C. (Given the specific heat capacity of water is 4.18 J/(g °C))

• 8.36 kJ

• 54.76 kJ

• 46.40 kJ

• 37.80 kJ

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Which of the following is a correct description of cellular respiration and combustion.

• Cellular respiration produces less energy than combustion.

• Cellular respiration and combustion produce heat and light.

• Cellular respiration and combustions are single step reactions.

• Cellular respiration has a lower rate of reaction than combustion.

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-4

A 1.500 g peanut was burned under a beaker containing 100 g of water at 25.0 °C. After the flame went out, the mass of the peanut was 0.350 g and the temperature of the water had risen to 30.0 °C. Calculate the energy content of the peanut in kJ g^-1. (Given the specific heat capacity of water is 4.18 J/(g °C))

• 1.82 kJ g^-1

• 1820 kJ g^-1

• 2.09 kJ g^-1

• 24.0 kJ g^-1

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4