Balancing Equations

Question 1

solution

Answer 1

• a mixture of one or more substances dissolved into another (homogeneous) - cannot tell one substance from another

Question 2

What are the parts of a solution?

Answer 2

solute and solvent

Question 3

What is a solute?

Answer 3

substance being dissolved in a solution

Question 4

What is a solvent?

Answer 4

substance that is shown in a solution

Question 5

suspension

Answer 5

a mixture of solute particles temporarily suspended in the solvent, but do not dissolve and eventually sink to bottom (heterogeneous)

Question 6

colloid

Answer 6

a mixture of one or more solute particles permanently suspended in the solvent (do not dissolve or settle, constant movement)

Question 7

What are physical properties?

Answer 7

characteristics that can be observed without changing the substance, usually deal with physical appearance

Question 8

What are chemical properties?

Answer 8

deal with how substance can react, usually require a change in the substance in order to be observed

Question 9

What are physical changes?

Answer 9

substance remains the same, only appearance changes

Question 10

What are chemical changes?

Answer 10

result in production of a new substance, substance is changed

Question 11

What are the ways to identify chemical change?

Answer 11

• temperature change - gas production - precipitate production (solid comes out of 2 liquids) - color change is not predicted

Question 12

subscript

Answer 12

Na₂

Question 13

superscript

Answer 13

Na²

Question 14

radical

Answer 14

2 or 3 elements connected to each other (in a formula) that act as 1 solution (parentheses needed in formula)

Question 15

What is the formula for balancing equations?

Answer 15

__reactant + __reactant → __product + __product

Question 16

What are the states of matter?

Answer 16

• liquid
• gas
• solid

Question 17

Properties of a Liquid

Answer 17

• move over and around each other
• fill up space of container
• fixed volume
• no fixed shape

Question 18

Properties of Gas

Answer 18

• no arrangement of particles
• no fixed shape
• widely spread out particles
• fixed volume
• fills up shape of container

Question 19

Properties of Solid

Answer 19

• fixed volume
• fixed shape
• locked in place
• particles packed tightly together