10 T+ Friday Quiz (12/02/21)

What is a solenoid?

• A motor

• A coil of wire

• A wire that produces a magnetic force

• A wire between a magnet

What could you do to increase magnetic field strength of a coil of wire?

• Decrease the current

• Decrease the number of coils of wire

• Remove the magnetic material from the core

• Increase the current

The particles carrying the charge through a wire collide with the metal ___________________ in the wire. What word completes the sentence

• Anions

• Ions

• Particles

• Atoms

Generators in power stations use .........

• Electromagnets

• Permanent magnets

• Motors

• Bar magnets

Ohm's Law is when the current and the potential difference are

• Not related to each other

• Inversely proportional

• Directly proportional

• Increasing but only to a certain point

What piece of quipment would you NOT need to seperate an insoluble solid from a liquid?

• Condenser

• Filter paper

• Conical flask

• Funnel

What is chromatography?

• The process of separating an insoluble solid from a solvent

• The process of separating two soluble substances

• The method used to separate liquids

• The process of separating a soluble solid from a liquid

What is a solvent?

• A soluble substance that dissolves in a solvent

• A substance that dissolves a soluble substance

• A substance that can be separated

• A substance that is insoluble

How are ions formed?

• a pair of Electrons are shared between non-metals

• Intermolecular forces interact to form ions

• Electrons are transferred between metals

• By the loss or gain of electrons

Why do ionic compounds have high melting and boiling points?

• There are strong covalent forces of attraction over the shared electrons

• There are weak intermolecular forces between the molecules

• There are strong electrostatic forces of attraction between oppositely charged ions

• They contain charged particles which carry charge