Middle School Chemistry

States of Matter

100

This state of matter has a fixed volume and shape.

What is a solid?

200

This state of matter has a fixed volume but can change shape.

What is a liquid?

300

This state of matter has neither a fixed volume nor a fixed shape.

What is a gas?

400

When matter changes from gas to liquid it is called this

What is condensation?

500

Changing from a solid directly to a gas is called this.

What is sublimation?

Properties

100

color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point.

What is a physical property?

200

This type of element are typically good conductors of heat and electricity.

What are metals?

300

These elements are typically brittle.

What are non-metals?

400

This is the formula for density.

What is D=M/V?

500

This property refers to the ability to bend or change the shape of a solid. (Metals have this property)

What is malleability?

Periodic Table

100

The atomic number refers to the number of these in an atom.

What is the # of protons?

200

The mass of elements tends to _______________ as you move across a row or down a column.

What is increase?

300

The columns in the table are called this.

What is groups or families?

400

Sodium, Iron, Nickle are examples

What are metals?

500

The group of elements got their name because they are so non-reactive they never interact with other elements.

What are the noble gases?

Atomic Structure

100

These are the 3 sub-atomic particles that make up an atom.

What are protons, electrons, and neutrons?

200

These particles have a negative charge.

What are electrons?

300

The nucleus of an atom is composed of these particles.

What are protons and neutrons?

400

Count the atoms of the following compound:

C₆H₁₂O₆

Carbon = 6

Hydrogen = 12

Oxygen = 6

What is 24?

500

This is the term for an atom that has gained or lost electrons.

What is an ion?

Energy

100

The energy of motion

What is kinetic?

200

Stored energy

What is potential energy?

300

Measures the average kinetic energy of a substance

What is temperature?

400

This state of matter has the highest potential and kinetic energy.

What is a gas?

500

0 kelvin

What is absolute zero?