Chemistry

Hunting Elements

100

There are 118 of these on the periodic table.

What are elements?

200

The number of electrons in the first, second, and final shells of a full atom.

What are 2, 8, and 8?

300

Humans are made up of mainly this number of elements

What are six elements?

400

Atoms of hydrogen have one of each of these.

What are proton and electron

500

Alkali metals, such as sodium, have this many electrons in its outer shell.

What is 1?

Chemical Terms

100

The stages from when a product is made until it is disposed of.

What is the life-cycle of a product?

200

A substance made from more than one element joined by a chemical bond

What is a compound?

300

The mass of a substance per unit volume

What is density?

400

An electrical attraction between atoms.

What is a bond?

500

Characteristic of a material that can be identified, observed, or measured and does not rely on testing if the material reacts with another substance.

What is a physical property?

Chemical Formulas

100

Two hydrogen and one oxygen make up water. The formula is...

What is H₂O?

200

Methane made up of three hydrogen and one nitrogen.

What is NH₃?

300

Sulfur dioxide with an odor similar to a burnt match or sometimes compared to rotten eggs is made up of one sulfur atom and two oxygen atoms.

What is SO₂?

400

Sulfuric acid can burn your mouth, throat, erode a hole in your stomach, and even cause death. It has one sulfur atom, two hydrogen atoms, and four oxygen atoms.

What is H₂SO₄?

500

You are given acetic acid that has two oxygen, three hydrogen, and 2 carbon atoms.

What is C₂H₃O₂?

Chemical Equations

100

Ag   +       H₂S      ->        Ag₂S  +     H₂

What is  2Ag   +   H₂S    ->    Ag₂S  +     H₂?

200

Na     +    Cl₂      ->       NaCl

What is    2Na +    Cl₂    ->   2NaCl 

300

SiO₂    +    C  ->       SiC     +     CO

What is    SiO₂    +    3C  ->     SiC     +    2CO

400

KOH     +    CO₂    ->    K₂CO₃    +     H₂O

What is    2KOH    +    CO₂    ->    K₂CO₃    +   H₂O

500

FeCl₃     + NaOH  ->       Fe(OH)₃   +   NaCl

What is   FeCl₃   + 3NaOH  ->     Fe(OH)₃   +  3NaCl

States of Matter

100

State of matter with a specific volume but not a specific shape.

What is a liquid?

200

A state of matter with no fixed shape. It will expand to fill the space available.

What is a gas?

300

A state of matter with relatively fixed volume and shape. Its particles tend to stay close together and not move very much.

What is a solid?

400

Malleability applies mainly to this type of matter.

What is a solid?

500

A graduated cylinder is often used to measure the volume of this type of matter.

What is a liquid?