General Science Knowledge Test! Trivia Quiz

Carbon is a solid at room temperature because it exists in the form of graphite or diamond, both of which have a highly ordered and tightly packed arrangement of atoms. This arrangement gives carbon its solid state, as opposed to a liquid or gas, which would require more energy to break the intermolecular forces holding the atoms together.

The law of the conservation of energy states that energy can neither be created nor destroyed. This means that the total amount of energy in a closed system remains constant over time. Energy can only be transferred or transformed from one form to another. Therefore, the correct answer is "created or destroyed" and "destroyed or created" because both options convey the same meaning.

The correct answer is that the energy of an object is equal to its mass times the speed of light squared. This is derived from Einstein's theory of relativity, which states that energy and mass are interchangeable and can be converted into each other. The equation E=MC2 represents this relationship, where E is energy, M is mass, and C is the speed of light. This equation shows that a small amount of mass can be converted into a large amount of energy, highlighting the immense power contained within even a tiny amount of matter.

The molecule C12H22O11 is commonly referred to as sugar. Sugar is a type of carbohydrate that is commonly used as a sweetener in food and beverages. It is composed of carbon, hydrogen, and oxygen atoms, which are represented by the chemical formula C12H22O11. Sugar is a natural substance that can be found in fruits, vegetables, and honey, as well as being produced commercially from sugar cane or sugar beets. It is widely used in cooking and baking, and it provides a source of energy for the body.

Vaporization is the correct answer because it refers to the process of a substance changing from a liquid state to a gas state. This change of state can occur for various substances, not just water and steam.

Chlorine reacts with anything that is wet because it is a highly reactive chemical that readily combines with water molecules. When chlorine comes into contact with wet substances, such as water or moisture on your body, it can cause chemical reactions that may result in various effects, such as skin irritation or discoloration.

Sea water has a pH value of 8, which makes it alkaline. The pH scale measures the acidity or alkalinity of a substance, with values below 7 indicating acidity, and values above 7 indicating alkalinity. Since the given pH value of 8 is above 7, it falls into the alkaline range.

Hydrogen Oxide is more commonly referred to as water. Water is composed of two hydrogen atoms and one oxygen atom, hence the name hydrogen oxide. It is a transparent, odorless, and tasteless liquid that is essential for all known forms of life. Water is widely used for various purposes such as drinking, cooking, cleaning, and industrial processes. It is also crucial for maintaining the Earth's ecosystems and climate.

There are four officially recognized states of matter: solid, liquid, gas, and plasma.

Rain water is naturally acidic due to the presence of carbon dioxide in the atmosphere. When carbon dioxide dissolves in water, it forms carbonic acid. This acid gives rainwater its slightly acidic nature.

Francium reacts more strongly compared to the other elements listed. This is because francium belongs to the alkali metal group, which is known for its high reactivity. As we move down the alkali metal group, the reactivity generally increases due to the larger atomic size and lower ionization energy. Francium has the largest atomic size and the lowest ionization energy among the elements listed, making it the most reactive and therefore reacting more strongly than lithium, potassium, caesium, and rubidium.