Chemistry

Front

What is the element with the symbol Ne?

Back

Neon

Front

What is the chemical name of NH₄OH?

Back

Ammonium hydroxide

Front

What is the mass ratio of hydrogen to oxygen in H₂O?

Back

1:8

Front

What is the formula of Ammonium phosphate?

Back

(NH₄)₃PO₄

Front

Which of the following is a polyatomic ion?

Back

Sulfate (SO₄²⁻)

Front

What is a chemical element?

Back

A substance that cannot be broken down into simpler substances by chemical means.

Front

Define a compound in chemistry.

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed by the transfer of electrons, while a covalent bond is formed by the sharing of electrons.

Front

What is the pH scale?

Back

A scale used to measure the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic).

Front

What is a mole in chemistry?

Back

A unit that measures the amount of a substance, defined as containing exactly 6.022 x 10²³ particles.