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WorksheetsJersey College Chemistry
Total questions: 10
Worksheet time: 5mins
The sum of all the life-sustaining chemical reactions that occur in the body makes up _______________.
energy
metabolism
catabolism
chemistry
All matter is composed of 92 naturally occurring _______________.
molecules
electrolytes
elements
minerals
The smallest subunit of an element is a(n) _______________.
ion
molecule
nucleus
atom
Two or more atoms united covalently form _______________.
molecules
bonds
nutrients
enzymes
A substance that maintains a steady acidity or alkalinity of body fluids is a(n) ___________.
base
buffer
acid
enzyme
Isotopes that fall apart easily are described as _______________.
electrified
negatively charged
radioactive
activated
Organic compounds are based on the element _______________.
nitrogen
oxygen
potassium
carbon
An acid can be defined as __________.
a chemical substance capable of releasing a hydrogen ion (H+) when dissolved in water
a chemical substance capable of releasing an Na (Na+) ion to another substance
a chemically reactive substance
a chemically nonreactive substance
Bases can be defined as __________.
substances that do not react with acids
chemical substances containing a hydrogen ion (H+)
a reaction between an acid and a base
chemical substances that release a hydroxide ion (OH−) in solution and can accept a hydrogen ion
Salts are __________.
formed by a reaction between an acid and a base
a chemical substance containing a hydrogen ion (H+)
a chemical substance that can accept a hydrogen ion (H+)
a type of chemical bond
