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WorksheetsUNIT 2 QUIZ
Total questions: 20
Worksheet time: 11mins
Matter is defined as...
substance that has mass and volume.
substance that has mass and temperature.
substance that expands upon freezing.
substance that absorbs tremendous amounts of heat.
A substance that is pure and cannot be broken down any further without losing its identity is an...
Element
Compound
Solution
Mixture
The elements zinc, copper, magnesium and many others are necessary to organic function yet occur in very small amounts. These are called...
Trace elements
Minor elements
Major nutrients
Macromolecules
An atom is...
The fundamental unit of life
The smallest unit of matter with an identity
A neutral particle that provides mass
Powers the process of making energy for plants
The atomic mass of an element is defined by the combination of its...
Protons and neutrons
Electrons and protons
Neutrons and membranes
Neutrons and electrons
A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction is a...
Molecule
Polymer
Monomer
Atom
An element that has a complete outer shell of valence electrons and can no longer participate in a chemical reaction are called ___________ elements.
Inert
Active
Ionic
Molecular
The combination of valence electrons of different atoms forms a ...
Chemical bond
Atomic number
Fluid membrane
Isotope
Chemical bonds formed by the imbalance of electrical charges on atoms are _____________ bonds.
Ionic
Covalent
Hydrogen
Chemical
Chemical bonds formed by the balanced electrical charges on atoms are _____________ bonds.
Ionic
Covalent
Hydrogen
Chemical
Chemical bonds formed by the electrical charges of the hydrogen and oxygen electrons from water are _____________ bonds.
Ionic
Covalent
Hydrogen
Chemical
Each of the following explains why water is so useful to living organisms EXCEPT...
Water carries nutrients to all cells in our body and oxygen to our brain.
Water allows the body to absorb and assimilate minerals, vitamins, amino acids, glucose, and other substances.
Water accumulates toxins and waste.
Water helps to regulate body temperature.
The difference between cohesion and adhesion of water molecules is...
In cohesion, water molecules stick together
In cohesion, water molecules provide a hard surface layer
In adhesion, water molecules stick together
In adhesion, water molecules absorb tremendous amounts of heat
Water's ability to dissolve polar and ionic molecules makes it a near-perfect _______________.
Solvent
Solute
Acid
Base
Water's relationship to temperature is governed by its ability to...
Absorb and release tremendous amounts of heat
Absorb and release limited amounts of heat
Regulate its own boiling point
Freeze at temperatures well below -150oC
Fish are able to survive in frozen water because when water freezes it...
Floats
Sinks
Never freezes
Never melts
Water acidic properties are useful to biological systems because...
Acids can balance an excess of basic compounds in the blood
Acids can dissolve non-polar compounds in the blood
Acids can safely add more hydrogens into the blood
Acids can remove water from the blood
Proteins are commonly called...
Monomers
Polymers
Ions
Polar molecules
Monomers are made into polymers by the process of...
Dehydration synthesis
Hydrolysis
Hydrogen bonding
Ionic bonding
Protein polymers are broken down into _____________ monomers.
Amino acid
Saccharide
Glycerol and fatty acid
Nucleoitide
