Chemistry Final Flashcards
List the characteristics of an acid
- Tastes sour
- corrosive
- Turns blue litmus paper red
- produces Hâ‚‚
What is the purpose of the pH scale?
To test the acidity of a substance
List the characteristics of a base
- Tastes bitter
- Feels slippery
- Turns red litmus paper blue
- Corrosive
Is this a chemical reaction?
-You add a clear liquid to a clear liquid and it turns green
Yes, unexpected color change
Is this a chemical reaction?
-You mix a white solid into a clear solution and it dissolves
No, dissolving is a physical change
Is this a chemical reaction?
-You mix a yellow liquid with a clear liquid and it turns yellow and the temperature changes
Yes, temperature change is a chemical change
Is this a chemical reaction?
-You mix a blue liquid with a clear liquid and a blue solid appears at the bottom of the test tube
Yes, a new substance forms
Is this a chemical reaction?
-You mix two substances form and they produce gas
Yes, a new state of matter is formed
List 5 physical properties
- Luster
- Malleability
- Ductility
- Conductivity
- Color
List 5 chemical properties
- Oxidation
- Combustion
- Reactivity
- Taste
- Flammability
How would the following liquids layer?
- Purple- 3.5 g/mL
- Green- .45 g/mL
- Pink- 1.53 g/mL
- Orange- .99 g/mL
- ———Green———-
- ———Orange———-
- ———Pink———-
- ———Purple———-
Element, Compound, Mixture?
-A pure substance made of just one kind of atom
Element
Element, Compound, Mixture?
-Several kinds of particles together that have NOT chemically combined
Mixture
Element, Compound, Mixture?
-Copper is an example
Element
Element, Compound, Mixture?
-Made of two or more kinds of atoms chemically combined
Compound
Element, Compound, Mixture?
-About 112 different kinds
Element
Element, Compound, Mixture?
-COâ‚‚ is an example
Compound
Element, Compound, Mixture?
-Sugar water is an example
Mixture
Element, Compound, Mixture?
-Can’t be broken down
Element
Homogenous or Heterogeneous?
-Sugar and water
Homogenous
Homogenous or Heterogeneous?
-Rasins and cereal
Heterogeneous
Homogenous or Heterogeneous?
-Baked chocolate cake
Homogenous
Homogenous or Heterogeneous?
-Ocean water
Homogenous
Homogenous or Heterogeneous?
-Italian dressing
Homogenous
What are 3 ways to test pH?
- Probe
- Colorimetric
- Litmus paper
Homogenous or Heterogeneous?
-Carbonated soda
Homogenous
Name 3 neutral substances
water, blood, milk
Drain cleaner has a pH of 14. It is very (basic/acidic)
basic
Solid
Definite shape AND volume
Liquid
Indefinite shape, definite volume
Gas
Indefinite shape AND volume
Plasma
Indefinite shape AND volume, electrically charged particles
What are 4 ways to determine if a chemical reaction had occurred?
- Temperature change
- Precipitate forms
- Unexpected color change (ex. clear liquid+clear liquid)
- Gases or bubbles released