Resources A 1 Flashcards pp.94-102

Name properties of metals.

-shiny -reacts with HCl and CuCl2 -conductive -malleable

Name properties of non-metals.

-Dull -Brittle -Non-reactive with HCl and CuCl2

Define: Malleable- Brittle- Ductile-

Malleable- Flexible or bendable Brittle- hard; breaks apart Ductile-can be drawn into wire.

Name five metals.

-Gold, silver, iron, zinc, copper, etc.

Name five non-metals.

- carbon, nitrogen, helium, chlorine, neon, etc.

What are metalloids and give examples of them.

-Substances that share properties of metals and non-metals. -B, Al, Si, Ge, etc.

What is a physical change and give two examples.

-where the original substance remains -melting, density, conductivity.

What is a chemical change and give two examples.

-where a new substance is created. -metal “rusting”, fuel burned.

Metals when pure have a high luster (are shiny).

Physical

Plants carry on photosynthesis in order to make food and oxygen.

Chemical

Metals are typically much better conductors of heat and electricity than are non mentals.

Physical

Bread dough increases in volume if it is allowed to “rise” before baking.

Chemical

A candle burns and becomes smaller over time.

Chemical

Metals are typically ductile (can be drawn into wire).

Physical

Nitrogen gas, which is relatively non reactive, can form nitrogen oxides at the high temperatures of an operating automobile engine.

Chemical

Healing of a cut on your hand.

Chemical

Argon gas, rather than air, is used in many light bulbs to prevent oxidation (“rusting”) of the metal filaments.

Chemical

Tungsten’s high melting point makes it useful for light bulb filaments.

Physical

The hardness of diamonds enables them to be used on drill bits.

Physical

Mercury’s high density and liquid state at room temperature make in useful in barometers.

Physical

Copper has a reddish brown color.

Physical

A puddle of rain water evaporates after a couple of days.

Physical

Sodium chloride, table salt, is dissolved in water.

Physical

Some metals become dull when exposed to air.

Chemical

Fish rotting

Chemical

Describe the nucleus

Center part of an atom that has protons and neutrons in it.

Describe energy levels.

They are the outer part of an atom where electrons are located.

What is the atomic number and mass for helium?

Atomic number is 2. Atomic mass is 4.0026.

Define atomic number.

Identifies each element and is equal to the number of protons.

Define atomic mass.

The weight of an atom found by adding the protons & neutrons.

Give the number of protons, electrons, and neutrons for Zn.

Protons = 30 Electrons = 30 Neutrons = 35

What are protons?

Positively charged particles in the nucleus.

What are neutrons?

Particles in the nucleus with zero charge.

What are electrons?

Negatively charged particles located in the energy levels.