1 of 53

7.1 Progress Tracker

How can we make something new that was not there before?

2 of 53

GIF

3 of 53

4 of 53

5 of 53

6 of 53

Smoke burns in water

​

Hot vs. Cold water

7 of 53

8 of 53

C

9 of 53

Circle of Trust

10 of 53

Supporting Discussion

Presentation

Turn up the Discussion

11 of 53

12 of 53

13 of 53

14 of 53

15 of 53

16 of 53

Related Phenomena

  • Yeast in dough
  • Sugar cubes in water (dissolving)
  • Jawbreakers and Cotton Candy in water
  • Pop Rocks
  • Soap suds
  • Ice cubes melting
  • Carbon dioxide in water
  • Baking soda and vinegar
  • Mentos and coke
  • Carbonation
  • Snap,Crackle, Pop Rice Crispies
  • Alka-Seltzer
  • Cooking Bacon
  • Scrubbing Bubbles
  • Oxi-Clean
  • Lava Lamp
  • Elephantā€™s Toothpaste or Devilā€™s toothpaste

1

17 of 53

DQB

18 of 53

DQB

19 of 53

DQB

20 of 53

DQB

21 of 53

22 of 53

Digitized DQB Link

23 of 53

  • Gases, Liquids and Solids are all matter
  • Matter has mass and takes up space
  • All matter is made of particles

24 of 53

Where is the gas coming from?

25 of 53

26 of 53

27 of 53

28 of 53

Key Model Ideas

  • ļ»æGases, liquids and solids are all matter
  • ļ»æļ»æMatter has mass and takes up space
  • ļ»æAll matter Is made of particles
  • In a closed system, no matter can get in or out, so the mass stays the same.
  • In an Open System, matter can get in and out so the mass can change if that happens

​

29 of 53

Whatā€™s in a Bath Bomb that is producing the gas?

30 of 53

Whatā€™s in a Bath Bomb that is producing the gas?

Mixing ingredients with water

31 of 53

  1. coconut oil
  2. Epsom salts
  3. baking soda
  4. olive oil
  5. sugar-free lemonade mix
  6. citric acid
  7. sugar-based lemonade mix
  8. sugar
  9. table salt
  10. corn starch

32 of 53

Whatā€™s in a bath bomb that is producing the gas?

  • None of the substances made bubbles when added to water
  • Some of the substances dissolved when added to waterā€“ these were soluble.
  • Some of the substances didnā€™t change in water, they just clumped up or formed a layerā€“ these were insoluble.
  • A couple of the substances made the water turn murky or cloudyā€” these were partially soluble.

33 of 53

Which combinations of the substances in a bath bomb produce a gas?

https://docs.google.com/spreadsheets/d/1koh81830v-FdQz6LXLDh9F6ggQIXp-MrJ2UUqu1e2t4/copy

A

B

C

D

E

F

G

H

I

J

A

​

​

​

​

​

​

​

​

​

​

B

​

​

​

​

​

​

​

​

​

​

C

​

​

​

​

​

​

​

​

​

​

D

​

​

​

​

​

​

​

​

​

​

E

​

​

​

​

​

​

​

​

​

​

F

​

​

​

​

​

​

​

​

​

​

G

​

​

​

​

​

​

​

​

​

​

H

​

​

​

​

​

​

​

​

​

​

I

​

​

​

​

​

​

​

​

​

​

J

​

​

​

​

​

​

​

​

​

​

34 of 53

Question

​

What is in a bath bomb that is producing the gas?

Sources of evidence

  • Ingredient list from store bought bath bomb
  • Observations of individual bath bomb ingredients
  • Observations of individual ingredients added to water

What we Figured out

​

  • Bath Bomb are made of many different ingredients
  • None of the individual substances produced a gas when mixed with water alone.
  • Properties donā€™t change for a substance

​

35 of 53

36 of 53

Key Model Ideas- End of Lesson 5

  • ļ»æGases, liquids and solids are all matter
  • ļ»æļ»æMatter has mass and takes up space
  • ļ»æAll matter Is made of particles
  • In a closed system, no matter can get in or out, so the mass stays the same.
  • In an Open System, matter can get in and out so the mass can change if that happens
  • Properties donā€™t change for a substance
  • Less dense gases ( and liquids) float upward when surrounded by denser gases and liquids
  • Denser gases ( and liquids ) sink downward when surrounded by less dense gases ( and liquids)

​

37 of 53

38 of 53

39 of 53

40 of 53

41 of 53

42 of 53

43 of 53

44 of 53

45 of 53

Heating Water Investigation

Flame Test with Electrical Energy

46 of 53

Key Model Ideas

  • Gases, liquids, solids are all matter
  • Matter has mass and takes up space.
  • All matter is made of particles.
  • In a closed system, no matter can get in or out, so the mass stays the sameā€¦ even when changes happen to the matter (such as becoming a gas)
  • In an open system, matter can get in or out, so the mass can change if that happens.
  • Properties donā€™t change for a substance
  • A substance has properties that can help us identify it
  • Solubility is a measure of how much a substance breaks apart and mixes with the liquid it is added to.
  • Mixing only one substance in a bath bomb with water does not cause gas bubbles to appear
  • The composition of matter is the same throughout a substance.
  • Less dense gases (and liquids ) float upward when surrounded by denser gases (and liquids)
  • Denser gases (and liquids) sink downward when surrounded by less dense gases (and liquids)
  • When new substances (Products) are produced from old substances (Reactants) some of the particles that make up the original substances break apart and/or join to make new types of particles.

47 of 53

48 of 53

49 of 53

50 of 53

+ Combining calcium carbonate with each substance one at a time could provide evidence of whether a chemical reaction has occurred.

+ Evidence to look for one or more property changes.

+ If a property changes, then a new substance has been produced, which would support the scientistsā€™ claim that a chemical reaction is occurring between the calcium carbonate and that substance.

51 of 53

Substance

Before combining

water

Ā clear, liquid, odorless

calcium carbonate

white, solid powder, odorless

malic acid

white, solid powder, odorless

52 of 53

Water & malic acid

Water & calcium carbonate

Malic acid & calcium carbonate

Water, calcium carbonate & malic acid

+ soluble in water

​

+ no odor

+ not soluble in water

​

+ no odor

+ no observable change

​

+ no odor

+ bubbles, a gas

​

+ an odor (floral/citrusy/soda)

53 of 53

Evidence:

+ Ā Before these substances are combined, the malic acid and marble are solids and the water is a liquid.

+ Ā After combining there is a gas that forms.

+ Ā Before combining any substances, none of them have an odor.

+ Ā Malic acid and water combined do not have an odor.

+ Ā Calcium carbonate and water combined do not have an odor.

+ Ā When malic acid, calcium carbonate, and water are combined there is a flowery/soda like odor.

​

Use of key model ideas:

+ Ā Different substances have different properties.

+ Ā State of matter at room temperature is a property.

+ Ā Odor is a property.

+ Ā Chemical reactions produce new substances.

​

Related reasoning:

+ Ā Properties of substances in the container change.

+ Ā Since properties have changed, a new substance was made.

+ Since a new substance was made, a chemical reaction has occurred.