Resources A 1 Flashcardspp.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
Malleable- Flexible or bendableBrittle- hard; breaks apartDuctile-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 purehave a high luster(are shiny).
Plants carry on photosynthesis in order to make food and oxygen.
Metals are typically much better conductors of heat and electricity than are non mentals.
Bread dough increases in volume if it is allowed to rise before baking.
A candle burns andbecomes smallerover time.
Metals are typically ductile (can be drawn into wire).
Nitrogen gas, which isrelatively non reactive, canform nitrogen oxides at thehigh temperatures of anoperating automobileengine.
Healing of a cuton your hand.
Argon gas, rather than air, is used in many light bulbs to prevent oxidation (rusting) of the metal filaments.
Tungstens high melting point makes it useful for light bulb filaments.
The hardness of diamonds enables them to be used on drill bits.
Mercurys high density and liquid state at room temperature make in useful in barometers.
Copper has a reddish brown color.
A puddle of rain water evaporates after a couple of days.
Sodium chloride, table salt, is dissolved in water.
Some metals become dull when exposed to air.
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 = 30Electrons = 30Neutrons = 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.