8th Grade Chemistry

Front

What is the mnemonic 'Girls Love Their Cell Phones On Now' used to remember?

Back

The signs of a chemical reaction.

Front

What are the properties of acids?

Back

They conduct electricity when dissolved in water, taste sour, and react with metals to produce hydrogen gas.

Front

What is the total number of atoms in a molecule of alanine (C3H7NO2)?

Back

13

Front

What is a metalloid?

Back

A shiny and malleable substance that is not always a good conductor of electricity.

Front

How many atoms of hydrogen are in a molecule of glucose (C6H12O6)?

Back

12

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the pH scale?

Back

A scale used to measure how acidic or basic a solution is.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.