surface area + rate practical

Question 1

whats a top-pan balance?

Answer 1

it is a scientific scale

Question 2

whats is the rate of reaction?

Answer 2

speed with which a chemical reaction takes place

Question 3

what is a surface area to volume rate?

Answer 3

it is the surface area of a solid relative to its volume

Question 4

how can you increase the surface area?

Answer 4

to increase the surface area, you can break it into smaller pieces

Question 5

what ALWAYS increases when you increase the surface area to volume ratio?

Answer 5

the surface area will always increase

Question 6

what is the equation for the rate of reaction based on the amount of reactant used?

Answer 6

amount of reactant used/ time taken

Question 7

what is the equation for the rate of reaction based on the amount of reactant used?

Answer 7

amount of product used/ time taken

Question 8

what is the gradient?

Answer 8

on graphs the gradient represents the rate at which 1 quantity changes relative to another

Question 9

what is the instantaneous rate of reaction?

Answer 9

rate at which reactants are converted to produce at specific moment in time

Question 10

what is the mean rate of reaction?

Answer 10

it is the average rate which reactants are converted into products in a given time

Question 11

what is the tangent

Answer 11

straight line that touches a curve exactly one point without crossing it

Question 12

how can you determine the rate of reaction?

Answer 12

if a reaction produces a gas, we can measure the decrease in mass from the gas that escapes

Question 13

what does deduct mean?

Answer 13

to take away

Question 14

what happens when we calculate the total volume of gas produced divided by total time of reaction?

Answer 14

mean rate of reaction

Question 15

how do you find the mean rate of reaction in a graph?

Answer 15

the steeper the slope, the greater the rate of reaction

Question 16

describe the speed of the powder and chips producing

Answer 16

the powder and chips will produce the same mass of the product however the powder will produce in a shorter amount of time

Question 17

how can the instantaneous be determined on a graph?

Answer 17

instantaneous can be determined from the gradient of the curve at the specific time