Mixtures & Changes

Question 1

Definitions! Matter

Answer 1

Anything that has mass & volume

Question 2

Definitions! Mechanical Mixture

Answer 2

Physical mixing of different substances that keep their own properties. Heterogeneous. Ex. Trailmix

Question 3

Definitions! Suspensions

Answer 3

Undissolved material that hovers in the other material (liquid or gas), maintains its own property, separated by filtering. Heterogeneous. Ex. Bubble Tea

Question 4

Definitions! Pure Substance

Answer 4

Has element one type of atom and compounds more than one type of atom. Homogeneous. Ex. Au (Gold) or H20

Question 5

Definitions! Solutions

Answer 5

Combines the properties of solute (usually a solid) & solvent (a liquid) same throughout and separated by evaporation. Homogeneous. Ex. Water and Salt

Question 6

Definitions! Homogeneous

Answer 6

Same composition + properties throughout. Ex. Koolaid

Question 7

Definitions! Heterogeneous

Answer 7

Different composition + properties throughout. Ex. Trailmix

Question 8

Definitions! Properties

Answer 8

Characteristics used to distinguish one sample of matter from another.

Question 9

Definitions! Quantitative

Answer 9

These properties are measured and always include numbers. Ex. Length, Mass, Density

Question 10

Definitions! Qualitative

Answer 10

These properties are not measured but instead, are observed with our senses. Ex. Textures, Colour, Shape

Question 11

Definitions! Chemical Properties

Answer 11

Characteristics that are observed when the material undergoes a chemical change or chemical reaction and forms a new substance. Ex. Reacts With Acid

Question 12

Definitions! Physical Properties

Answer 12

Characteristics that do not change the chemical nature of matter. These are observed without creating a new substance.

Question 13

Definitions! Physical Change

Answer 13

No new kinds of matter + Particles are still the same. Sometimes Reversible. Like the change of state or dissolving. Ex. Tearing Paper, Freezing Water & Cutting Vegetables

Question 14

Definitions! Chemical Change

Answer 14

Different Materials with different properties. Irreversible. Like cooking/heat exposure, chemical reaction, and rusting. Ex Burning wood, Rusting nails & bleaching your hair.

Question 15

Clues Of Chemical Change

Answer 15

1. Heat is released
2. Bubbling
3. Irreversible
4. Change in color
5. New substance is formed