GCSE AQA Physics Changes of State & the Particle Model: The ancient Greeks thought that

Question

The ancient Greeks thought that atoms were tiny spheres that could not be divided into anything smaller.

Since then, different discoveries have led to the model of the atom changing.

Some of the discoveries are given in Table 1.

Table 1

The mass of an atom is concentrated in the nucleus.

Electrons orbit the nucleus at specific distances.

The nucleus contains neutrons.

The nucleus contains positively charged protons.

Which discovery was the most recent? Tick (✓) one box.

A
B
C
D

The alpha particle scattering experiment led to the nuclear model of the atom.

Figure 5 shows the paths of alpha particles travelling close to a gold nucleus.

Complete the sentences.

Choose answers from the box.

Each answer may be used once, more than once or not at all.

Alpha particles and gold nuclei are both positively charged.

The gold nucleus ___________________ the alpha particles.

As the alpha particle approaches the gold nucleus, the electric field strength experienced by the alpha particle ___________________ .

As an alpha particle approaches the gold nucleus, the force experienced by the alpha particle ___________________ .

The results of the alpha particle scattering experiment were reproducible.

What does reproducible mean? Tick (✓) one box.

Another scientist repeats the experiment and gets the same results.

Another scientist repeats the experiment and gets different results.

The same scientist repeats the experiment and gets the same results.

The ancient Greeks thought that atoms were tiny spheres that could not be divided into anything smaller - AQA - GCSE Physics - Question 4 - 2019 - Paper 1