Chem Exam 1 (Excluding Math) + Random Hunting the Elements questions

Se

Selenium

Properties of a metal

Shiny, malleable, ductile, good conductors of heat and electricity

Si

Silicon

Ag

Silver

There are ( ) unique substances (Elements) arranged on an amazing chart that reveals their hidden secret to anyone who knows how to read it

118

The human body uses more than ( ) elements

25

In the last 70 years, scientists have left nature behind and created ( ) new elements

26

( ) of elements are minerals

3/4 (75%)

An atom with ( ) electrons is a satisfied atom

8

Calcium is....

A shiny silver metal

Chemical properties are

A substances ability to undergo transformations into different substances. EX: reactivity, flammability

Ac

Actinium

Group 1 on the periodic table

Alkali Metals (most reactive metals)

Al

Aluminum

H

Hydrogen

Ga

Gallium

Group 17 on the periodic table

Halogens (most reactive non-metals)

He

Helium

La

Lanthanum

Pb

Lead

Li

Lithium

Mg

Magnesium

Mn

Manganese

Hg

Mercury

Mo

Molybdenum

Xe

Xenon

How are elements arranged on the periodic table?

by increasing atomic number. Columns are called groups, rows are called periods

properties of nonmetals

dull, brittle, poor conductors of electricity and heat

How an atom reacts chemically depends on how willing it is to share _________________ with others.

electrons

Pure substances are

elements or compounds only

Au

gold

Mixtures can be..

homogeneous or heterogeneous

Fe

iron

Where are metals located on the periodic table?

left of staircase

Density is

mass/volume. (The mass of a substance in one unit of volume in one unit of volume of that substance)

group 18 on the periodic table

noble gases (Bottom part top row: Lanthanides. Bottom part bottom row: Actinides)

Properties of metalloids

properties of both metals and nonmetals: good insulators

What is an element?

pure substance that consists entirely of one type of atom and can not be broken down into simpler stable substances

. At the bottom of the periodic table, beginning with number 84, polonium, all of the elements and their isotopes are ______________________.

radioactive

Groups 3-12 on the periodic table

transition metals

What is a molecule?

two or more atoms chemically bonded together

What is an ion?

a charged atom or molecule

Mixtures are

a physical blend of at least two substances. Substances retain their true identities and properties. (Because mixtures are PHYSICALLY blended, they can be PHYSICALLY separated

Group 2 on the periodic table

alkaline earth metals (slightly less reactive than alkali metals)

Ba

Barium

Be

Beryllium

Bi

Bismuth

physical properties are

Characteristics observed or measured without changing the identity of a substance. EX: mass, density, boiling point

Cl

Chlorine

Cr

Chromium

Co

Cobalt

Cu

Copper

What is matter?

Anything that has mass and takes up space

Ar

Argon

As

Arsenic

B

Boron

Br

Bromine

Cd

Cadmium

Ca

Calcium

C

Carbon

What 6 elements make life possible?

Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur

Cs

Cesium

F

Fluorine

I

Iodine

Kr

Krypton

Ne

Neon

Ni

Nickel

N

Nitrogen

O

Oxygen

P

Phosphorus

Pt

Platinum

K

Potassium

The number of ( ) determines what kind of element it is

Protons

What is a compound?

Pure substances that can be broken down into simpler substances. (If you are given a formula, its a compound)

Ra

Radium

Rn

Radon

Where are the non-metals on the periodic table?

Right of the staircase

Rb

Rubidium

Sc

Scandium

What is an atom?

Smallest particle of an element

Na

Sodium

Sr

Strontium

S

Sulfur

Zn

Zinc

Where are metalloids located on the periodic table?

They touch the staircase (NOT Al AND At)

Sn

Tin

When copper is combined with another element, __________, it makes bronze, the first manmade metal alloy.

Tin

Ti

Titanium

W

Tungsten

Noble gasses are

Unwilling to mix with other elements and react with them

U

Uranium

V

Vanadium