What happens to the pH of a solution when it becomes more acidic?(1 point)
Responses
The pH increases.
The pH increases.
The pH decreases.
The pH decreases.
The pH remains the same.
The pH remains the same.
The pH becomes neutral.
The pH decreases.
What is the significance of atoms in the formation of compounds?(1 point)
Responses
Atoms are the smallest particles of matter.
Atoms are the smallest particles of matter.
Atoms determine the color of compounds.
Atoms determine the color of compounds.
Atoms provide energy to compounds.
Atoms provide energy to compounds.
Atoms combine to form compounds.
Atoms combine to form compounds.
(1 point)
Responses
Protons
Protons
Neutrons
Neutrons
Electrons
Electrons.
What do these two changes have in common?
rust forming on a metal gate
snails growing shells
(1 point)
Responses
Both conserve mass
Both conserve mass
Both are chemical changes
Both are chemical changes
Both are only physical changes
Both are only physical changes
Both are changes in state
Both are changes in state
Both are chemical changes.
Which of the following best describes the gravitational force on the Moon compared to Earth?
(1 point)
Responses
The Moon has stronger gravity than Earth.
The Moon has stronger gravity than Earth.
The Moon has weaker gravity than Earth.
The Moon has weaker gravity than Earth.
The Moon has the same gravity as Earth.
The Moon has the same gravity as Earth.
The gravity on the Moon depends on its distance from the Sun.
The Moon has weaker gravity than Earth.
What process transfers energy from the Sun's core to its surface?(1 point)
Responses
Convection
Convection
Radiation
Radiation
Conduction
Conduction
Diffusion