Which of these statements is false?

Choose 1 answer

the centre of an atom is positively charged

the centre of an atom contains protons and electrons

the centre of an atom is very small compared to the atom

almost all the mass of an atom is concentrated in the centre

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Which of these describes the experiment to investigate the structure of an atom?

Choose 1 answer

negative electrons were fired at a thick sheet of gold

negative alpha particles were fired at a thin sheet of gold

positive alpha particles were fired at a thin sheet of gold

positive electrons were fired at a thin sheet of gold

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Which sentence best describes the plum pudding model?

Choose 1 answer

an atom cannot be divided into anything smaller

an atom is made of a positive blob with negative electrons in it that can be removed or added to

an atom is made of a negative blob with positive electrons in it that can be removed or added to

an atom has a dense positive central nucleus with electrons orbiting in shells

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What did Democritus say atoms were?

Drag the images into the correct place.

Correct Answer

Incorrect Answers

small particles made of even smaller particles

small particles that were all the same size

physically indivisible

small and able to be broken up

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Fill in the blanks.

Select the missing words in the text.

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Answer incorrect

Look at the slide below to work out the answer.