I RLLY WQANT DIE

Question 1

Identify the use of litmus (paper & solution) and identify any limitations.

Answer 1

Litmus paper can tell if a solution is basic or acidic but can’t tell you how strong the solution is

Question 2

Explain how to use an acid-base indicator.

Answer 2

The universal indicator. U put drops of it into a solution and depending on the color u can tell the ph level

Question 3

Define pH and use it to classify substances as acidic, basic or neutral.

Answer 3

A measure of the concentration of hydrogen ions (H+) in a solution
Classification:
Acidic: pH < 7
Neutral: pH = 7
Basic: pH > 7

Question 4

Describe advantages of using digital methods of measuring pH rather than chemical indicators.

Answer 4

Higher accuracy and resolution

Question 5

Recall the indicators of a chemical change.

Answer 5

Color change
Formation of gas bubbles
Temperature change
Formation of a solid precipitate
Change in odor

Question 6

Acids with Metals:

Answer 6

acid + metal → salt + hydrogen gas

Question 7

Acids with Carbonates:

Answer 7

acid + carbonate →metal salt + water + carbon dioxide

Question 8

Acids with Bases (Neutralization):

Answer 8

acid + base → salt + water

Question 9

Define the term isotope.

Answer 9

An isotope is a variant of a chemical element that has:
The same number of protons (same atomic number)
A different number of neutrons

Question 10

What is the source of natural radioactivity

Answer 10

Decay of unstable nuclei in atoms

Question 11

Explain the term radioisotope

Answer 11

An isotope that is unstable causing to to release radiation in order to become more stable

Question 12

alpha symbol

Answer 12

fish

Question 13

what is an alpha particle

Answer 13

2 proton 2 nutron

Question 14

what is alpha charge

Answer 14

2+

Question 15

beta symbol

Answer 15

long b

Question 16

what is beta p[artivel

Answer 16

nutron split into protn and electon

Question 17

beta charge

Answer 17

1-

Question 18

gamma sumbol

Answer 18

funny lookin y

Question 19

what is it

Answer 19

prorons and nutrons rearagnge in the nuclues of an aton

Question 20

gamma ray charge

Answer 20

it is an EM wave so no charge

Question 21

wtf is halflife

Answer 21

half-life is the time it takes for half of the atoms in a radiative isotope to decay

Question 22

COLISION THEORUY BITCH??

Answer 22

Collision theory states that for a chemical reaction to happen, reactant particles must collide with enough energy (activation energy) and the right orientation

Question 23

activation energy?

Answer 23

The minimum kinetic energy required for a reaction to occur

Question 24

Identify different methods for measuring reaction rates.

Answer 24

Gas Volume:
Loss of Mass:
Color Change:
pH Change:

Question 25

Identify and describe the factors that influence the rate of a chemical reaction.

Answer 25

surface area
temp
concertation
precennce of a catalyst

Question 26

how does surface are increase the rate of reation

Answer 26

increasing the surface area of a reactant increases the rate of reaction by increasing the frequency of collisions between reactant particles, as more particles are exposed and available to collide2

Question 27

how does temp increcse rate of eadtiom

Answer 27

ncreasing temperature speeds up reactions by increasing particle collisions and energy, allowing more particles to overcome the activation energy (Ea) barrier, leading to more effective collisions and faster reaction rates.

Question 28

how does concertation increase the rate of reation

Answer 28

Increasing concentration speeds up reactions by providing more reactant particles, which leads to more frequent collisions. This increases the chances of overcoming the activation energy (Ea), resulting in a faster reaction rate.

Question 29

how does The presence of a catalyst increase the rate of reation

Answer 29

The presence of a catalyst. A catalyst speeds up a chemical reaction by providing an alternative pathway with a lower activation energy (Ea), without being consumed in the process.

Question 30

alpha equation

Answer 30

238 234 4
u –> th. +. a
92. 90 2

Question 31

beta equain

Answer 31

24. 24. 0
        Na. –>. mg. + B
        11 12. -1

Question 32

gamma

Answer 32

it the same thing but + Y