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Q 1/10
Score 0
Which model of an atom is correctly labeled?
120
D
C
A
B
Q 2/10
Score 0
Which of the statements CORRECTLY describes the structure and particles of an atom?
120
The neutrons have no charge and are located in the nucleus of an atom
The nucleus is composed of protons (positive) and electrons (negative)
The protons are negative and they spin around the nucleus
The electrons are positive and are located in the nucleus of an atom
10 questions
Q.
Which model of an atom is correctly labeled?
1
120 sec
Q.
Which of the statements CORRECTLY describes the structure and particles of an atom?
2
120 sec
Q.
Look carefully at the pH scale in the image. Which would be the weakest acids among the following substances?
3
120 sec
Q.
Among the following materials, select the one that is a mixture
4
120 sec
Q.
Which of the following substances can be separated into its components by chemical reactions?
5
120 sec
Q.
The symbols below (spheres) represent star masses and distances. Which diagram shows two stars that have the greatest gravitational force between them?
6
120 sec
Q.
Which of the following correctly describes what will happen to a cube made of silver that has been carried to the top of the Himalaya mountains?
7
120 sec
Q.
Which of the following is a force that acts at a distance? (non-contact force)
8
120 sec
Q.
What is the force that acts against the movement of a swimmer, slowing them down?
9
120 sec
Q.
The distance(displacement) - time graph shows a motion of a cart along a straight line. What statement correctly describes the cart movement ?
