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# Test Questions with Chemistry Images

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Grade 8 Periodic Table and Elements
Which ion has a configuration that matches the configuration of the noble gas, whose electron-dot diagram is shown below?
1. $"N"^"3-"$
2. $"Rb"^"+"$
3. $"Ca"^"2+"$
4. None of the above
The diagram below shows the electron-dot diagram of potassium. What does potassium do with electrons to become stable?
1. It gains 1 valence electron
2. It gains 2 valence electrons
3. It loses 1 valence electron
4. It loses 2 valence electrons
Which of the following is a reasonable conclusion, based on the diagram shown?
1. Argon has a greater number of gas molecules than oxygen and nitrogen do.
2. Oxygen has a greater number of gas molecules than argon and nitrogen do.
3. Argon, oxygen, and nitrogen all have an equal number of gas molecules.
4. Oxygen and nitrogen both have a greater number of gas molecules than argon does.
Grade 10 Periodic Table and Elements
Which family is the following element in?
1. Noble gases
2. Alkaline earth metals
3. Alkali metals
4. Halogens
The diagram represents Rutherford's Gold Foil experiment. Which statement is a conclusion that came from this experiment?
1. electrons orbit the nucleus in rings at set distances
2. the nucleus of an atom is made of protons and neutrons
3. the probable location of electrons can be predicted using a cloud model
4. most of an atom is empty space and its mass is concentrated in its center
Which of the following is found at D?
1. The freezing point
2. The melting point
3. The sublimation point
4. The boiling point