Quiz sull'Elettricità

What is matter?

• Matter is anything that has mass and takes up space.
• Matter is a concept that cannot be defined.
• Matter is only found in solid form.
• Matter is a type of energy.

Can you give me examples of matter?

• love and dreams

• friendship and generosity

• politics and economics

• planets and stars

What is matter made of?

• Matter is made of molecules.
• Matter is made of energy.
• Matter is made of cells.
• Matter is made of atoms.

What is an element?

• An element is a substance made of a mixture of different atoms.

• An element can be broken down into simpler substances.
• An element is a type of chemical reaction.
• An element is a substance made of only one type of atom.

What is the periodic table of elements?

• A collection of laboratory equipment used in experiments.
• A graphical representation of chemical reactions.
• A list of all known compounds in chemistry.
• A table where you can find all the chemical elements organized by atomic number.

Is the atom the smallest element in the universe?

• Yes, atoms are the smallest elements in the universe.
• No, of course not.

• Atoms are the only building blocks of matter.
• Molecules are smaller than atoms.

What are subatomic particles?

• Subatomic particles are the same as chemical elements.
• Subatomic particles are only found in molecules.
• Subatomic particles are larger than atoms.
• Subatomic particles are the particles that make up atoms.

What are the characteristics of the subatomic particles?

• Protons: positive charge, in nucleus; Neutrons: no charge, in nucleus; Electrons: negative charge, orbiting nucleus.
• Protons: positive charge, orbiting nucleus; Neutrons: positive charge, in nucleus; Electrons: negative charge, in nucleus.

• Protons: no charge, in nucleus; Neutrons: negative charge, orbiting nucleus; Electrons: positive charge, in nucleus.
• Protons: negative charge, orbiting nucleus; Neutrons: positive charge, in nucleus; Electrons: no charge, in nucleus.

What is the defining property of an element?

• Mass number
• Its cloud of electrons

• Atomic number
• Chemical symbol

What happens when current flows through a wire?

• A magnetic field is formed.

• Nothing happens.

• The current stops.