Atoms make up________.

• electrons.

• all matter.

• cake batter.

• toms.

Electrons have a _____________ charge.

• positive

• negative

• neutral

• even

Elements are the simplest forms of matter.

• True

• False

Water is made from two different elements, these are________.

• Magnesium and Oxygen.

• Hydrogen and Magnesium.

• Oxygen and Hydrogen.

• Gold and Silver.

Unlike charges ____________ and like charges ______________.

• repel, attract.

• stay, leave.

• attract, repel.

• leave, stay.

Water is labelled a 'polar molecule'. Why?

• There is ice at the north and south poles.

• Water molecules have positively and negatively charged ends.

• Water slides down objects.

The property of water molecules being attracted to other water molecules is called _________.

Tags

NGSS.HS-ESS2-5

The property of water molecules being attracted to other substances/materials (glass, soil) is called __________.

Tags

NGSS.HS-ESS2-5

_________ refers to the process by which highly concentrated molecules intermingle in another substance as a result of their kinetic energy of random motion.

• Division

• Diffusion

• Dilema

• Decision

When grains of sugar are added to water the sugar molecules become surrounded by the attracted water molecules so that the individual sugar molecules are no longer part of the sugar crystals. This process continues until either all the sugar (________) has dissolved in the water (_________) to form a solution, or there are no longer any unattached water molecules remaining and so no more sugar can dissolve.

• solvent, solute

• solid, liquid

• liquid, solid

• solute, solvent