1. Unit 2- Structure & Transformation of Matter
1.)I will define homogeneous mixtures , heterogeneous mixtures, physical changes, and chemical changes.
2.)I will identify homogeneous mixtures, heterogeneous mixtures, physical changes, and chemical changes.
3.)I will contrast homogeneous , mixtures heterogeneous mixtures, physical changes, and chemical changes.

2. 1 Mixture(VOC. WORD) No new substance is made. A+B=AB
(2 or more substances are put together without combining chemically/ can be separated out and put back together again. )(DEF.)
(Ex.) pepper + water = pepper water
(A) (B) = (AB)

3. 2
Solute(voc. Word)
(Solid part of mixture that can be soluble -dissolve/ seem to have disappeared into mixture or insoluble -be on top, bottom, or top & bottom of mixture. )(def.)
(Ex.) pepper + water = pepper water
(A) (B) = (AB)
(solute)

4. 3
Solvent(voc. Word)
(Liquid part of mixture. Can have more than 1. Breaks apart solute, stays below solute, or is above solute. Universal solvent = water is the most commonly used all over the world.)(def)
(Ex.) pepper + water = pepper water
(A) (B) = (AB)
(solute) (solvent)

5. 3A Solute name Solvent name Mixture name Salt water salt water
Flour water
flour 3A

6. Homogenous Mixture(voc. Word)4
Homogenous Mixture(voc. Word)
(One type of mixture . Call it Solution. Solute dissolves+ spreads out all throughout the mixture.)(def.)
Cup of salt and water.
Water
Grains of salt

7. Heterogeneous Mixture(voc. Word)5
Heterogeneous Mixture(voc. Word)
(Second type of mixture= heterogeneous . Is called a suspension.)(def.)
Heterogeneous mixture= solute is:
1. Top
2. Bottom
3. Top & bottom
Cup of pepper

9. Physical/ Chemical Properties7
Physical/ Chemical Properties
Words used to describe how something looks, weighs, etc. Description/ characteristics of an object: mass, density, shape, and color.

10. 8
Physical Property
Observed or measured without changing the identity of the object/ matter.
Observed/ look (P.P.)
Color
Shape
Measured (P.P.)
Mass (11.5g)
Melting point (78⁰C
Length (12 in)
Weight (11.5 g)
Boiling point (300⁰C)
Size (38-40 XL)

11. 9
Chemical Property
Observed or measured as the object/matter changes in its identity.
Measured (C.P.)
Mass (11.5g)
Melting point (78⁰C
Length (12 in)
Weight (11.5 g)
Boiling point (300⁰C)
Size (38-40 XL)
Look/observed (C.P.)
Color
Shape

12. 10 Physical Change Mixtures (A+B=AB (No new substance formed)
No bubbles
No smoke
No sound
No heat
No light
Can be separated!

13. 11 Matter Has weight and takes up space Solid Liquid Plasma Gas
(4 States of Matter)

14. 12 Mass Amount of atoms in matter. “more atoms” (mother of family)
“45” A
“6” A
More mass
More mass

15. 13 Atoms Smallest (nonliving) piece of matter. (sister of family)
Cheerio
Cracker
Cracker Crumb
“45”
Atoms
“6”
Atoms

16. Less space between atoms More space between atoms14
Volume
Amount of space an object takes up. (Father of the family)
More volume
Less volume
Liquid
Solid
Less space between atoms
More space between atoms

17. 15 Weight Strength of pull of gravity on object. (Brother of family)
Cracker crumb
Dead Tree
1 Gram
1,052 Grams

18. 16 Density How tightly packed atoms are in an object. (Step-sister)
Wooden Block
Concrete Block
Not as
dense
Very
dense
Same
size
“not tight”
atoms
“tight”
atoms

19. Law of Conservation of & Mass17
Law of Conservation of & Mass
Same amount of mass before change and after change.
(Physical and chemical change)
Before
After
(38 g)
(38 g)
Water
Grains of salt
Salt + Water

20. 18 Chemical Change Change into a new substance/ compound. A+B=C
Signs/ Physical Property or Chemical property
Bubbles
Smoke
Light
Sound
Heat
Color change

21. Baking Soda + Vinegar= C0219
Chemical Reaction
When new substance/ compound is forming.
Baking Soda + Vinegar= C02

22. 20
Boiling Point
Temperature at which a liquid matter becomes a gas matter.
Water at a liquid at room temperature.
(0°C / 33°F or higher
Water vapor/ steam. Water as a gas.
(100°C/ 212°F

23. 21
Melting Point
Temperature at which a solid matter becomes a liquid matter.
Ice is water as a solid
(0°C/ 32°F
Water puddle is water a liquid
(1°C or higher/ 33°F or higher

24. 22
Element
Substance whose matter is made up of only one kind of atom. (Periodic Table)
Hydrogen- H
Oxygen- O
Helium- He
Lead- Pb
Carbon- C
Sulfur- S

25. 23
Compound
Substance whose smallest unit is made up of atoms of 1 or more elements chemically bonded together.
Examples:
C02 (1 atom of Carbon &
2 atoms of 0xygen) Carbon Dioxide
H202 (2 atoms of Hydrogen &
2 atoms of Oxygen) Hydrogen peroxide.

26. 24
Molecule
Contains atoms of the same element. Must have a number of 2 or more written beside the element’s symbol. These are used to make compounds.
Examples:
O2 (2 atoms of oxygen)
NO2 (2 atoms of oxygen &
1 atom of nitrogen)