S1 Day 1 Review

Front

What are isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Front

What does it mean for an atom to gain electrons?

Back

When an atom gains electrons, it becomes negatively charged due to the increase in the number of negatively charged electrons compared to positively charged protons.

Front

What do elements in the same group of the periodic table have in common?

Back

Elements in the same group have the same number of valence electrons, which influences their chemical properties.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom or ion.

Front

Which element has a higher ionization energy: Chlorine (Cl) or Iodine (I)?

Back

Chlorine (Cl) has a higher ionization energy than Iodine (I).

Front

What did Ernest Rutherford discover about the atom?

Back

Ernest Rutherford discovered that the atom is mostly empty space and has a positively charged nucleus.

Front

What is the charge of a nucleus in an atom?

Back

The nucleus of an atom is positively charged due to the presence of protons.

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an element reacts chemically and its bonding behavior.

Front

How do you identify isotopes of the same element?

Back

Isotopes of the same element can be identified by their atomic number (same protons) but different mass numbers (different neutrons).

Front

What happens to an atom's charge when it loses electrons?

Back

When an atom loses electrons, it becomes positively charged.