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WorksheetsStructure of Matter
Total questions: 19
Worksheet time: 10mins
Which of the following is a type of matter?
air in a balloon
electricity running through a wire
both air in a balloon and electricity running through a wire
neither air in a balloon nor electricity running through a wire
Which of the following particles is described as the basic building block of matter?
atoms
compounds
mixtures
pure substances
protons, neutrons, and electrons
Which of the following subatomic particles are located in the nucleus of the atom?
protons and neutrons
protons only
neutrons only
electrons only
protons, neutrons, and electrons
Which of the following BEST describes the location of electrons within the atom?
in an electron cloud around the nucleus
in orbits around the nucleus
outside of the nucleus
in the nucleus
Use the periodic table to answer the following question. Which element has 50 protons?
tin (Sn)
vanadium (V)
cesium (Cs)
carbon (C)
The atomic number of iron (Fe) is 26. What does this tell you about an atom of iron?
An atom of iron has 26 protons.
The sum of protons and neutrons in an atom of iron is 26.
An atom of iron has 26 neutrons.
The sum of protons, neutrons, and electrons in an atom of iron is 26.
Which of the following statements about the masses of subatomic particles is true?
Electrons have very little mass compared to protons and neutrons.
Protons, neutrons, and electrons all have about the same mass.
Electrons have no mass.
Neutrons have very little mass compared to electrons and protons.
Protons and neutrons have very little mass compared to electrons.
Which of the following subatomic particles is electrically neutral?
neutrons
protons
electrons
Which of the following subatomic particles is negatively charged?
electrons
protons
neutrons
What is the significance of valence electrons?
Valence electrons are involved in forming chemical bonds.
Valence electrons contribute significantly to the mass of an atom.
Valence electrons cause an atom to move very rapidly when it is in its gaseous state.
Valence electrons have a different charge than those electrons that are closer to the nucleus.
Which of the following statements is true of valence electrons?
Valence electrons are those electrons that are furthest away from the nucleus of an atom.
Valence electrons are those electrons that are closest to the nucleus of an atom.
Valence electrons have more electrical charge than other electrons.
Valence electrons have less electrical charge than other electrons.
When two atoms form a chemical bond with one another, which subatomic particles are involved?
electrons
protons
neutrons
Which of the following statements regarding the formation of compounds from elements is true?
When elements combine to form compounds, chemical bonds form between the atoms of the compound.
When elements combine to form compounds, the number of protons in each atom changes.
When elements combine to form compounds, the number of neutrons in each atom changes.
Which of the following are considered pure substances?
elements and compounds
compounds and mixtures
element
compound
mixture
Which of the following statements about elements is true?
Some elements exist as molecules.
Some elements contain different types of atoms.
All elements exist as molecules.
An element never exists as a molecule.
Which of the following is the correct scientific definition for a pure substance?
A pure substance contains only one element or compound.
A pure substance contains only one type of atom.
A pure substance has all impurities removed.
A pure substance is always a compound.
Why does a solid have a fixed shape?
The particles vibrate in place but do not move past each other.
The particles in a solid do not move at all.
The particles in a solid repel each other, so they are spread far apart and cannot be pushed closer together.
A chemist is working with three different samples of the same substance. Each sample is a different state. In which state of matter are the particles moving the fastest: solid, liquid, or gas?
gas
solid
liquid
Which of the following correctly describes a microscopic property of a liquid that results in an observed macroscopic property?
A liquid pours because particles slide past one another.
A liquid cannot be compressed because particles slide past one another.
A liquid can be compressed because particles are far apart.
A liquid pours because particles are close together.
