Ellington - Specific Heat Math

Presentation

•

Chemistry

•

9th - 10th Grade

•

Practice Problem

•

Easy

•

NGSS

HS-PS3-4, HS-PS3-1, HS-PS3-2

Standards-aligned

Eileen Pascucci

Used 39+ times

FREE Resource

5 Slides • 13 Questions

Ellington - Specific Heat Math

What are we doing today?

In the warm up question, you thought about a pot of water absorbing energy from the stove. We are going to try to calculate EXACTLY how much energy it absorbed.

First thing we need to know is Specific Heat

Physical Property of a substance
Ex: Specific heat of water = 4.18 J/°C g
If we KNOW the specific heat, we can use it to calcuate the total energy transfered in a system

Next week need the full equation

q= heat

m = mass

C = Specific Heat

ΔT = Change in Temperature

Multiple Choice

What units are used to measure mass?

grams

Joules

°C

Multiple Choice

What units are used to measure Temperature?

grams

Joules

°C

Multiple Choice

I just said this today: What units are used to measure HEAT?

grams

Joules

°C

Multiple Choice

ΔT = Change in Temperature. How would you calculate the change in temperature?

Final temperature minus starting temperature

Starting temperature minus final temperature

Multiple Choice

250g of water (specific heat of 4.184 J/g^oC) is heated from 20^oC to 46^oC.

What is the change in temperature?

26^oC

-26^oC

250g

66^oC

Multiple Choice

250g of water (specific heat of 4.18 J/g^oC) is heated from 20^oC to 46^oC.

How would you calculate the total heat absorbed by the water?

250g x 4.18J/g^oC x 26^oC

46^oC - 20^oC

250 + 4.18 + 26

Multiple Choice

SOLVE IT: 250g of water (specific heat of 4.18 J/g^oC) is heated from 20^oC to 46^oC.

How much heat did the water absorb?

27,170 J

20,900 J

48,070 J

More practice coming your way!

Do you have this equation written down???

Open Ended

Calculate the amount of heat needed to raise the temperature of 15g of copper from 25^oC to 60^oC if copper has a specific heat of 0.386 J/g^oC

Type response here

Open Ended

How much energy is required to raise the temperature of 675g of aluminum from 15^oC to 35^oC. (Specific Heat of aluminum is 0.902 J/g^oC)

Type response here

Open Ended

The temperature of a piece of Metal X (specific heat of 0.724 J/g°C) with a mass of 95.4 g increases from 25.0°C to

48.0°C. How much heat did it take?

Type response here

Open Ended

How much heat is added to 3.4 g of olive oil at 21°C if the temperature increases to 85°C? The specific heat of olive oil is 1.97 J/g°C

Type response here

Open Ended

A piece of stainless steel with a mass of 1.55 g absorbs heat when its temperature increases by 178°C. If the specific heat of stainless steel is 0.491 J/g°C, how much heat was absorbed?

Type response here

Poll

How confident are you that you can learn this by the end of the week?

I already get it now, by the end of the week I will be a master.

I am feeling pretty good about getting it with some more practice.

This might not be my best week, but I don't think it will be too bad

I have no idea what is happening

Ellington - Specific Heat Math

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