WorksheetsMatter & PH
Total questions: 20
Worksheet time: 10mins
All matter that is now living or was alive at one time, with carbon present, falls within the scientific division of:
Physics
Anatomy
Organic Chemistry
Inorganic Chemistry
Matter with definite weight and volume but no definite shape is called:
Gas
Solid
Liquid
Organic
Which of the following conditions is an example of chemical change?
Water to Ice
Water to Steam
Raindrops to Snow
Oxygen & Hydrogen combining to form water.
Which of the following conditions is an example of chemical change?
None
Neutral
Positive
Negative
Atoms that are not missing any electrons in their outer shell and are considered electrically neutral are called:
Stable
Unstable
Neutron
Molecule
Atoms that are not missing any electrons in their outer shell and are considered electrically neutral are called:
Atom
Mixture
Element
Compound
Pure substances are made of only one type of:
Mixture
Compound
Atom or Molecule
Oxygen & Hydrogen
When a substance gains an electron and oxygen is released, the process is called:
Oxidation
Addition
Reduction
resuscitation
What is created when amino acids join together in chains?
Proteins
Elements
Chemicals
Compounds
Which of the following biochemical compounds form components that fill the intercellular spaces in the skin?
Lipids
Amino Acids
Carbs
Peptide Bonds
pH stands for:
Perfect Hair
Perfect Hydration
Potential Hydrogen
Potential Hydroxide
Why is pure water considered a neutral substance?
ions are all positively charged
anions and cations are present
positive and negative alkali cancel each other out
positive and negative ions balance each other out
What happens when an alkali is placed in water?
they neutralize each other
there are fewer "loose" OH- ions
alkali increases the concentration of hydrogen ions
alkali decreases the concentration of hydrogen ions
Acids tend to taste:
Sour
Bitter
Salty
Sweet
All of the following statements regarding the pH scale are true EXCEPT:
7 indicates a neutral substance
values below 7 indicate more acidity
values below 7 indicate more alkalinity
logarithmic scale that identifies the degree of acidity or alkalinity of a substance
On the pH scale, numbers less than 7 indicate a(n):
acidic solution
neutral solution
chemical solution
alkaline solution
On the pH scale, numbers greater than 7 indicate a(n):
acidic solution
neutral solution
chemical solution
alkaline solution
A pH of 5 is how many more times acidic than a pH of 6?
1.5
10
100
1,000
What color does blue litmus paper turn when placed in an acid?
Red ❤️
White 🤍
Green 💚
Orange 🧡
Chris was looking for a pH-balanced product to use. pH balanced refers to a product that ranges from a pH of:
4.5-5.5
6.5-7.0
7.5-10.5
11.5-12.0
