Basic chemistry, Properties of water, & pH

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

What is the only substance with a neutral pH of 7?

• Milk
• Orange Juice
• Water
• Blood

A insect like a water strider can skate along the top of a pond because:

• covalent bonds result in water cohesion

• hydrogen bonds result in water cohesion (surface tension)

• low surface tension of water

Tags

NGSS.MS-PS2-5

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

Tags

NGSS.MS-PS1-2

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Tags

NGSS.MS-PS1-4

Which two subatomic particles are located in the nucleus?

• Protons and Electrons
• Protons and Neutrons
• Electrons and Protons

An atom that loses an electron becomes which of the following?

• A negatively charged ion.
• A neutral ion.
• A positively charged ion.

Tags

NGSS.HS-PS1-2

In which type of bond are electrons transferred?

• Non-polar Covalent Bonds
• Polar Covalent Bonds
• Ionic Bonds
• Hydrogen Bonds