Átomos e elementos químicos

Multiple Choice

What are the three main components of an atom?

• Protons

• Neutrons

• Electrons

• Nucleus

Multiple Choice

Qual é a constituição do átomo de hélio em termos de número de prótons, nêutrons e elétrons?

• 2 prótons, 2 nêutrons, 2 elétrons

• 2 prótons, 1 nêutron, 2 elétrons

• 1 próton, 2 nêutrons, 2 elétrons

• 2 prótons, 2 nêutrons, 1 elétron

Multiple Choice

What characterizes each chemical element?

• Number of neutrons

• Number of protons

• Number of electrons

• Atomic mass

Multiple Choice

De que forma a constituição dos átomos influencia a sua massa e tamanho?

• A massa dos átomos é sempre igual.

• Os átomos de diferentes elementos químicos apresentam a mesma massa.

• Os átomos de diferentes elementos químicos podem ter diferentes massas.

Multiple Choice

What does the mass of subatomic particles depend on?

• The size of the atom

• The type of particle

• The energy level

• The temperature

Multiple Choice

De que depende a massa e o tamanho dos átomos?

• A quantidade de elétrons

• A quantidade de prótons

• A estrutura do núcleo

• A temperatura do ambiente

Multiple Choice

What are the applications of subatomic particles in technology as shown in the images?

• Cathode ray tubes

• Cancer therapy equipment

• Both of the above

• None of the above

Multiple Choice

Which atomic model is represented by the image that shows electrons embedded in a positively charged material?

• Dalton's model

• Thomson's model

• Rutherford's model

• Bohr's model

Multiple Choice

What are the characteristics of the current atomic model?

• Electrons move in orbits

• Electrons are found in defined regions

• Electrons have fixed trajectories

• Electrons are stationary

Multiple Choice

What percentage of the human body is made up of oxygen?

• 65.0%

• 18.5%

• 9.5%

• 3.2%

Multiple Choice

What are the chemical elements that can be found in a smartphone?

• Oxygen

• Gold

• Copper

• Silver

Multiple Choice

What are the chemical elements found in the human body and in modern technology?

• Oxygen

• Silicon

• Carbon

• Iron

Multiple Choice

What are the main components of an atom as illustrated in the diagram?

• Protons

• Neutrons

• Electrons

• Nucleus

Multiple Choice

What are the main components of an atom as described in the text?

• Protons and neutrons

• Electrons and neutrons

• Protons and electrons

• Neutrons and quarks

Multiple Choice

Classify the following statements as true (V) or false (F): A – Protons, neutrons, and electrons are subatomic particles. B – An atom is electrically neutral because the number of neutrons is equal to the number of electrons. C – What characterizes a chemical element is the number of neutrons. D – Atoms that have more protons and neutrons in the nucleus are the ones with greater mass. E – The distance between the nucleus and the defined limit for its electronic cloud is called atomic radius.

• True

• False

• Not Applicable

• Unknown

Multiple Select

Classify the following statements as true (V) or false (F): A – Protons, neutrons, and electrons are subatomic particles. B – The atom is electrically neutral because the number of neutrons is equal to the number of electrons. C – What characterizes a chemical element is the number of neutrons. D – Atoms that have more protons and neutrons in the nucleus are the ones with the greatest mass. E – The distance between the nucleus and the defined limit for its new electron is called the atomic radius.

• A – True

• B – False

• C – False

• D – True

• E – True

Open Ended

Completa a tabela com o número de eletrões de cada átomo. Justifica o teu raciocínio.

Open Ended

Indica os átomos que pertencem ao mesmo elemento químico. Justifica a tua escolha.

Open Ended

Complete the table with the number of electrons for each atom. Justify your reasoning.

Multiple Choice

What is the purpose of the simulation mentioned in the image?

• To build a molecule

• To build an atom

• To create a chemical reaction

• To study atomic mass

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident