CHEMISTRY EXAM REVIEW PART 1

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent
• Independent
• Control

Which variable is affected by what is being tested?

• Dependent
• Independent
• Control

Which variable is the one being tested?

• Dependet
• Independent
• Control

What is the dependent variable in this question?
What affect will the shape of the airplane's nose have on the distance it flies?

• hang time
• distance

Tags

NGSS.MS-PS2-2

^{What does the 6 represent above the C}

• Symbol 
• Name 
• Mass Number 
• Atomic Number 

Tags

NGSS.HS-PS1-1

How many electrons can be held in the first energy level ?

• 1
• 2
• 8
• 16

How many electrons can the 2nd energy level hold ?

• 2
• 4
• 8
• 16

How many electrons can the 3rd energy level hold?

• 2
• 8
• 16
• 18

____________ can move from one energy level to another when they gain or lose energy.

• electrons
• protons
• neutrons
• atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.

• mass number
• atomic number 
• atomic weuight
• isotope weight