Chemistry A Final Review

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
• Compound

Tags

NGSS.MS-LS1-5

Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

A scientist takes a sample of Li, Na, and K, and places them in water to see how they react. What is the dependent variable?

• The different types of metals

• The amount of water

• The scientist taking the samples

• The reactivity of the metals

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Tags

NGSS.HS-PS1-8

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Tags

NGSS.MS-PS1-1

1. Metals usually form

• anions

• cations

• no ions

• neutral

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The nonmetals in Groups 6A and 7A ____.

• gain electrons when they form ions

• have a numerical charge that is found by subtracting 8 from the group number

• all have ions with a ^–1 charge

• end in -ate

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How does an atom become an ion?

• Gain/Lose neutrons
• Gain/Lose Electrons
• Gain/Lose Protons
• Gain/Lose Atomic Mass

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2