Atoms
An atom has all the characteristics of and is the smallest unit of a(n)
What is an element?
A bond where electrons are shared among nonmetal elements only
What is a covalent bond?
The two basic components of the physical universe are
What are matter and energy?
The monomers of carbohydrates are
What are monosaccharides or glucose?
The ability to do work
What is energy?
Matter consists primarily of
What is empty space?
Bond where electrons are transferred between atoms of metals and nonmetals
What is an ionic bond?
boiling water, chilling gelatin, and mixing sugar and water are examples of
What is a physical change?
Cellulose provides bulk (roughage) in the diet of humans because we cannot digest it. Cellulose is a type of
What is a carbohydrate?
The universal solvent
What is water?
The subatomic particles found in the nucleus of an atom are
What are protons and neutrons?
The smallest unit of a large compound that is still that compound composed of covalently bonded atoms
What is a molecule?
When a person lights the wick of a kerosene lamp, the energy in the kerosene changes from _____ to _____.
What is potential energy to kinetic energy?
This type of lipid contains a hydrophilic head and hydrophobic tails, making them insoluble in water; makes up the plasma membrane of the cell.
What are phospholipids?
Diffusion will continue until this point is reached?
What is equilibrium?
An atom having a negative or a positive charge is called a(n)
What is an ion?
The energy needed to start a reaction.
What is activation energy?
Chemical reactions that absorb heat are called
What is endothermic reactions?
Made up of polypeptide chains of amino acids, which contain an amine group and a carboxyl group.
What are proteins?
The forces of attraction between water molecules that give water some of its unique properties are called
What are hydrogen bonds?
How many atoms are there in the molecule 2C5H10O5?
What is 40?
When a molecule is broken down into smaller molecules by adding a water molecule, the process is called
What is hydrolysis?
the assimilation of substances by living organisms
What is biosynthesis?
A type of polysaccharide that accounts for the strength of plant cells and is not digestible to most animals and humans is
What is cellulose?
random motion of particles due to collisions with other particles in a fluid
What is Brownian motion?