7th Adv Q2 QSE Review 7.6C 8.6E 7.7A 7.7C

Front

What caused the iron to change from shiny to rusty?

Back

A chemical reaction.

Front

What is a chemical reaction?

Back

The process in which substances undergo chemical changes that result in the formation of new substances.

Front

What does the graph represent?

Back

Jonathon walked to his girlfriend's house - stayed a while then walked home.

Front

What state of matter is represented by this picture?

Back

Liquid.

Front

What is the right part of a chemical equation called?

Back

Products.

Front

What are reactants in a chemical equation?

Back

Substances that enter into a chemical reaction.

Front

What is the definition of a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is an example of a chemical change?

Back

Rusting of iron.

Front

What is the definition of a substance?

Back

A form of matter that has a specific chemical composition.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down, while a compound is made of two or more elements chemically combined.