8.P.1 (Chemistry) Review

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, found between them on the periodic table.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What happens to carbon atoms during photosynthesis?

Back

The number of carbon atoms remains the same; if 6 carbon atoms are used, 6 carbon atoms will be in the products.

Front

What are noble gases?

Back

A group of nonreactive gases in Group 18 of the periodic table, including helium (He) and neon (Ne).

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together, such as H2SO4.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and properties, helping to predict their behavior.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of bonds.

Front

What is the role of carbon in the carbon cycle?

Back

Carbon is cycled through the environment via processes like photosynthesis, respiration, and combustion.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.