Ice floats on water because

• it has a greater cohesive property

• it has a higher heat capacity than liquid water

• water shrinks when it freezes, thus making it heavier than liquid water

• water expands when it freezes, thus making it lighter than liquid water

Tags

NGSS.MS-PS1-4

The inner part of an atom is made up of two particles, _______ and _________.

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons and lipids

A solution with a pH of 12 is a(n):

• acid

• base

• neutral

Tags

NGSS.MS-PS1-2

Water molecules are known as being polar, with

• The oxygen side being negative and the hydrogen side being negative

• The oxygen side being positive and the hydrogen side being negative

• The oxygen side being negative and the hydrogen side being positive

Tags

NGSS.MS-PS1-1

An example of capillary action is:

• Blood traveling through veins

• Water traveling up through a stem of a plant

• Using a small glass tube to take a sample of blood from a person’s finger

• All of the above

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Label the types of strong bonds that creates a water molecule (A), and the type of weak force that attracts water molecules together (B).

• A – ionic bond; B – covalent bond

• A – covalent bond; B – ionic bond

• A – covalent bond; B – hydrogen bond

The part of an atom that has a NEUTRAL charge.

• Electron

• Proton

• Neutron

Tags

NGSS.MS-PS1-1

If you were to see a water strider insect floating on the surface of a pond, which property of water would this behavior be best displaying?

• capillary action

• surface tension

• covalent convalescence

Water is a polar molecule because:

• it has an equal distribution of charge.

• it has an unequal distribution of charge.

• it has a symmetrical shape.

• it has a symmetrical shape and equal distribution of charge.

A solution with a pH of 4 is a(n):

• acid

• base

• neutral