Ratio Rates

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing surface area

• All of these

Tags

NGSS.HS-PS1-5

What is the ratio of the speed of light in a vacuum to the speed of sound in air?

• 299,792,458:343

• 343:299,792,458

• 1:1

• 299,792,458:1

If a car travels 150 km in 3 hours, what is its average speed in km/h?

• 50 km/h

• 45 km/h

• 60 km/h

• 55 km/h

In a chemical reaction, the rate of reaction is directly proportional to the concentration of reactants. What is this principle called?

• Le Chatelier's Principle

• Rate Law

• Avogadro's Law

• Boyle's Law

Tags

NGSS.HS-PS1-5

A scientist measures the rate of a reaction at different temperatures. What is the ratio of the rate at 50°C to the rate at 25°C if the rate doubles with every 10°C increase?

• 4:1

• 2:1

• 8:1

• 1:1

Tags

NGSS.HS-PS1-5

What is the ratio of hydrogen to oxygen atoms in a water molecule?

• 2:1

• 1:2

• 1:1

• 3:1

Tags

NGSS.MS-PS1-1

If a pendulum swings 20 times in 10 seconds, what is its frequency in Hz?

• 2 Hz

• 0.5 Hz

• 1 Hz

• 10 Hz

The rate of photosynthesis in plants is affected by light intensity. What is the ratio of photosynthesis rate at 1000 lux to 500 lux if the rate is directly proportional to light intensity?

• 2:1

• 1:2

• 1:1

• 4:1

Tags

NGSS.MS-LS1-6

In a population of bacteria, the growth rate is proportional to the current population. What is this type of growth called?

• Exponential Growth

• Linear Growth

• Logarithmic Growth

• Quadratic Growth

What is the ratio of the gravitational force on Earth to that on the Moon?

• 6:1

• 1:6

• 9.8:1.6

• 1.6:9.8