Phy Sci 9 Energy

What particles can be found in the part of the atom known as the electron cloud?

• Protons only

• Protons and electrons only

• Neutrons and electrons only

• Electrons only

Answer explanation

An atom has 10 neutrons, 9 protons, 9 electrons. What is the atomic number?

• 9

• 18

• 28

• 19

Tags

NGSS.MS-PS1-1

On the Periodic Table, the charge of every atom is

• Positive

• Negative

• Neutral

• Depends on the atomic mass

We add Kool-Aid powder to water to make Kool-Aid. In this case, the Kool-Aid powder is the ____ and the water is the ___.

• Solute, Solvent

• Solvent, solute

• Solute, solute

• Solvent, solvent

We pour solute into a solvent and stir. This solution contains a bit less than the maximum amount of solute the solvent can dissolve. This solution is

• Unsaturated

• Saturated

• Supersaturated

• KIndasorta saturated

We crush big chunks of solute into smaller pieces of solute. This will increase the rate of dissolving because

• It increases the surface area of the solute

• Who cares? Saban is gone!

• It decreases the amount of solvent in the solute

• It decreases the surface area of the solute

We want to quickly dissolve some sugar in some iced tea. How can we increase the rate of dissolving?

• Stir the mixture

• Add more queso, queso is always the answer!

• Decrease the temperature

• Use larger chunks of sugar

What would have the highest OH concentration?

• Strong Base

• Weak Base

• Strong Acid

• Weak Acid

If a substance has a pH of 8

• Weak base

• Strong base

• Weak acid

• Strong acid

You are riding the VelociCoaster, a roller coaster at Universal to celebrate Saban leaving college football. As you go downhill...

• Potential energy is converter to Kinetic energy

• Kinetic energy is converted to potential energy

• Chemical energy is converted to radiant and sound

• Kinetic energy is converted to radiant and chemical

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4