MJU1: Lesson 2 Quiz

How are elements organized in the periodic table?

• A. by density and date of discovery
• B. by atomic number and properties
• C. by atomic mass and melting point
• D. by abundance in nature and usefulness to humans

Which of these is the smallest?

• A. cells
• B. atoms
• C. matter
• D. elements

How do atoms of copper differ from atoms of aluminum?

• A. They are not pure substances.
• B. They have different chemical properties.
• C. They can be formed by physical changes.
• D. They are made up of more than one type of particle.

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Which substance is one that cannot be separated or broken down into simpler substances by chemical means?

• A. table salt
• B. gold wire
• C. candle wax
• D. water vapor

Think about a wooden chair and a balloon. What do these two objects always have in common?

• A. Both are made of atoms.
• B. Both have the same physical properties.
• C. Both are made of the same kind of atom.
• D. Both are made of the same number of atoms.

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Which two elements are most likely to have similar physical properties?

• A. copper and zinc
• B. copper and silver
• C. cadmium and indium
• D. gallium and cadmium

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Which statement correctly describes atoms?

• A. Atoms combine to make all the substances on Earth.
• B. Atoms of all substances have the same chemical properties.
• C. Atoms are easily destroyed when matter is cooled or heated.
• D. Atoms come in different sizes, but most are visible using a simple hand lens.

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How do you know how many protons and electrons are in an atom?

• Atomic mass
• Atomic Symbol
• Atomic Name
• Atomic Number

How do you know how many neutrons are in an atom?

• Atomic mass + Atomic number
• Atomic Mass x Atomic number
• Atomic Mass - Atomic number
• Atomic Mass / Atomic number

If an atom has 6 protons, 6 neutrons, and 6 electrons; what element is it?

• Oxygen

• Nitrogen

• Carbon

• Neon

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