Physical Science-Benchmark #2

Front

What is the Plum Pudding Model of the atom?

Back

A model proposed by JJ Thomson suggesting that atoms are composed of a positively charged 'soup' with negatively charged electrons embedded within it.

Front

How many electrons are shared in a double bond?

Back

4

Front

What is a covalent bond?

Back

A chemical bond formed when two atoms share electrons.

Front

What happens during an endothermic reaction?

Back

Energy is absorbed from the surroundings.

Front

Which state of matter has particles with the lowest kinetic energy?

Back

Solid

Front

What is the definition of kinetic energy?

Back

The energy an object possesses due to its motion.

Front

What is an exothermic reaction?

Back

A chemical reaction that releases energy, usually in the form of heat.

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 atomic number?

Back

The atomic number indicates the number of protons in an atom's nucleus and determines the element's identity.

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.