Matter & pH Flashcards
All matter that is living or was alive, with carbon present, is referred to as
Organic matter
Matter with definite weight and volume but no definite shape is known as
Liquid
What Is an example of chemical change
oxygen and hydrogen combining to water
Protons have which type of electrical charge
Positive
Atoms that are not missing any electrons in their outer shell and are considered electrically neutral are called
stable
When 2 hydrogen atoms combine with one oxygen atom, the result is water molecule, which is a
compound
Pure substances are made up of only one type of
atom/molecule
When substance gains en electron and oxygen is released, the process is called
reduction
What is it called when amino acids join together in chains
proteins
What biochemical compounds form components that fill the intercellular spaces in the skin
Lipids
pH stands for
potential hydrogen
Why is pure water considered a neutral substance
positive and negative ions balance each other out
What happens when an alkali is placed in water
alkali decreases the concentration of hydrogen ions
Acids tend to taste
sour
On the pH scale numbers fewer than 7 indicate
Acidity
