Atoms turn into positive ions Calculate the number of if they lose one or more neutrons for a stated element outer electron(s) given the number of protons and the mass number. Calculate the mass number for a particular element given the number of protons and neutrons in the atom. Rearrange the equation to find number of protons or number of neutrons and the mass number. Explain how isotopes of elements, all have the same number of protons but have a different number of neutrons. Define isotope. Describe an atom in terms of number of protons, neutrons and electrons when given the following representation . 4.4.1.3 Scientific models of New experimental evidence 0.6 Why has the model of the Model the alpha the atom and how may lead to a scientific atom changed since ancient scattering experiment Video clip YouTube: these models have model being changed or Greek times? by flicking a 1p coin changed. replaced. through stack of 2p Describe and explain why coins. The 1p coin Before the discovery of the scientific models are replaced. Video clip represents the alpha electron, atoms were particle and the stack YouTube: of 2p coins the gold
Atoms turn into positive ions if they lose one or more outer electron(s) Calculate the number of neutrons for a stated element given the number of protons and the mass number. Calculate the mass number for a particular element given the number of protons and neutrons in the atom. Rearrange the equation to find number of protons or number of neutrons and the mass number. Explain how isotopes of elements, all have the same number of protons but have a different number of neutrons. Define isotope. Describe an atom in terms of number of protons, neutrons and electrons when given the following representation . 4.4.1.3 Scientific models of the atom and how these models have changed. New experimental evidence may lead to a scientific model being changed or replaced. Before the discovery of the electron, atoms were 0.6 Why has the model of the atom changed since ancient Greek times? Describe and explain why scientific models are replaced. Model the alpha scattering experiment by flicking a 1p coin through stack of 2p coins. The 1p coin represents the alpha particle and the stack of 2p coins the gold Video clip YouTube: Video clip YouTube:
AQA-8463-SOW-ATOMIC.DOCX