Chemistry NCFE 2018-19 #1-15

Front

What is the name of the compound with the chemical formula CoF3?

Back

cobalt(III) fluoride

Front

How is copper (Cu) classified based on its location on the periodic table?

Back

a transition metal

Front

What can be concluded about Solid X and Solid Y based on their bonding types?

Back

Solid X contains only ionic bonds, and Solid Y contains only covalent bonds.

Front

What particle is emitted in the radioactive decay of a gold isotope represented by the equation Au → Ir + ?

Back

alpha particle

Front

What are the correct names for the ions formed when sodium chloride is placed in water?

Back

The sodium ion is the cation, and the chloride ion is the anion.

Front

What is the definition of a transition metal?

Back

Transition metals are elements that have partially filled d orbitals and can form variable oxidation states.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is an alpha particle?

Back

An alpha particle consists of 2 protons and 2 neutrons, and is emitted during radioactive decay.

Front

What is the role of cations and anions in ionic compounds?

Back

Cations are positively charged ions, while anions are negatively charged ions; they combine to form ionic compounds.