Exploring Motion and Chemical Reactions

Front

A car travels in a straight line with a constant velocity of 20 m/s for 5 seconds. What is the total distance covered by the car?

Back

200 m

Front

Transition of an electron from a higher energy level to a lower energy level.

Back

Emission of a photon

Front

What evidence supports the wave-particle duality of electrons?

Back

Electrons exhibit interference patterns

Front

Indicator of a chemical reaction when hydrochloric acid reacts with a metal: Formation of a precipitate, Change in color, Production of gas bubbles, Increase in temperature

Back

Production of gas bubbles

Front

Back

Front

Back

2.0 s

Front

What happens to the frequency of the photon emitted when an electron transitions from a higher to a lower energy level?

Back

Frequency increases

Front

Which phenomenon demonstrates the wave nature of electrons?

Back

Electron diffraction

Front

Which of the following is a sign of oxidation of a metal?

• Formation of rust
• Emission of light
• Production of sound
• Change in shape

Back

Formation of rust

Front

Back