If you drop a marble into a glass of water, the marble will sink because

its ____________________ is greater than that of water.

If you drop a marble into a glass of water, the marble will sink because its DENSITY is greater than that of water.

To the left is Mercury. It is a liquid at room temperature and is very dense so a pool ball will float on top if it.

The tarnishing of metal is an example of a(n) ____________________

change

The tarnishing of metal is an example of a CHEMICAL change.

The metal has oxidized and has a different chemical makeup where it

has tarnished.

Dissolving a spoonful of sugar in tea or coffee is an example of a(n)

____________________ change.

Dissolving a spoonful of sugar in tea or coffee is an example of a PHYSICAL change. You could still physically

separate the dissolved substance from the liquid by filtering or distilling.

The atom is made of 3 parts. The ______________ with a positive

charge, the_____________ with a negative charge, and the

______________ with no charge.

The atom is made of 3 parts. The PROTON with a positive charge, the

ELECTRON with a negative charge, and the NEUTRON with no charge.

The property of an element that indicates the number of protons in its atoms is the ____________________.

The property of an element that indicates the number of protons in its

atoms is the ATOMIC NUMBER.

The fact that matter is not created or destroyed in any chemical or physical

change is called the law of CONSERVATION OF MASS.

Which group of metals is so reactive that the metals are never found as uncombined elements in nature?

Which group of metals is so reactive that the metals are never found as uncombined elements in nature?

ALKALI METALShttp://www.youtube.com/watch?feature=player_detailpage&v=uixxJtJPVXk

In the laboratory, volumes of liquid are usually measured with a(n)

In the laboratory, volumes of liquid are usually measured

with a GRADUATED CYLINDER

The units liter, milliliter, and cubic centimeter are all used to measure the ____________________ of an

object or substance.

The units liter, milliliter, and cubic centimeter are all used to measure

the VOLUME of an object or substance. ALWAYS include the

unit of measurement in your answer.

Which parts of the atom move around the nucleus?

Which parts of the atom move around the nucleus?

• The ELECTRON has a NEGATIVE charge and moves around the atom.

The atomic number of an element is based on the

The atomic number of an element is based on the

• NUMBER of PROTONS

A material is said to be ductile if it…..

• A material is said to be ductile if it…• CAN BE STRETCHED INTO A WIRE.

What is the mass of 500 cm3 of PURE liquid water? Explain.

What is the mass of 500 cm3 of PURE liquid water? Explain.

500 grams because1 ml/cc/ cm3 of pure water has a

mass of 1 gram.Water has a density of 1.

D=M/VD=1gram/1ml

What name is given to the elements in Groups 3 through 12? How do their properties tend to

compare with the elements to the left and right of these groups?

Transition metals. They are less reactive than the metals in Groups 1 and 2 to their left; they tend to be more reactive than the metals to their right.

What name is given to the elements in Groups 3 through 12? How do their properties tend to compare

with the elements to the left and right of these groups?

Tell how you could use a ruler to determine the volume of a box.

1) Measure the length, width, and height of the box2) VOLUME= length x width x height 3) Make sure to include UNIT OF MEASUREMENT (cc, ml, L, etc)

http://www.youtube.com/watch?v=JijhDDJvExo&feature=player_detailpage

Which group of elements have some properties of

metals and some properties of nonmetals?

Which group of elements have some properties of metals and some properties of nonmetals?

Metalloids

Which reaction is exothermic? Explain your reasoning

Which reaction is exothermic? Reaction A is exothermic. An exothermic reaction is a reaction in which energy is released. Reaction A shows an increasing temperature, meaning that it is releasing energy, not absorbing it.

Which reaction is endothermic? Explain.

Which reaction is endothermic? Explain. Reaction B is endothermic. An endothermic reaction is a reaction in which energy is taken in. Reaction B shows a decreasing temperature, meaning that it is taking in energy, not releasing it.

What do the COLUMNS in the periodic table tell you?

What do the COLUMNS in the periodic table tell you?

The periodic table has a special name for its columns, too. When a column goes from top to bottom, it's called a group. The elements in a group have

the same number of electrons in their outer orbital. Every element in the first column (group one) has one electron in its outer shell. Every element on the second column (group two) has two electrons in the outer shell. As you keep counting the columns, you'll know how many electrons are in the outer shell.

There are some exceptions to the order when you look at the transition elements, but you get the general idea.

a.

Metals need to be stored in sealed containers for safety.

b.

Metals do not react with oxygen.

c.

Metals are malleable, ductile, and can carry an electric current.

d.

Metals are highly reactive substances.

In general, which of the following statements about metals is true?

c. Metals are malleable, ductile, and can carry an electric current.

HOW DO YOU IDENTIFY A METAL? What are the characteristics of metals? We've got four traits that will help you identify whether an element is a metal or not.

Conduction: Metals are good at conducting electricity. Silver (Ag) and copper (Cu) are some of the most efficient metals and are often used in electronics.

Reactivity: Metals are very reactive, some more than others, but most form compounds with other elements quite easily. Sodium (Na) and potassium (K) are some of the most reactive metals.

Chemical: A little complex here. Metals usually make positive ions when the compounds are dissolved in solution. Also, their metallic oxides make hydroxides (bases) (OH-) and not acids when in solution. Think about this example. Sodium chloride (NaCl), when dissolved in water, breaks apart into sodium (Na+) and chlorine (Cl-). See that sodium is the positive ion? Sodium is the metal. It works that way for other metals. Potassium chlorine (KCl) works the same way.

Alloys: Metals are easily combined. Mixtures of many elements are called alloys. Examples of alloys are steel and bronze.

Why does ice float?

Why does ice float?Ice floats because it is LESS dense in its frozen state. It is less dense because its volume increases. If you have ever

put a coke in the freezer for to long you know what I am talking about.

In the periodic table, the most reactive metals are found

In the periodic table, the most reactive metals are found

• Let's start on the left side of the periodic table. When looking for families, the first one you will find is the alkali metal family of elements. They are also known as the alkaline metals.

In an atom, the number of protons equals the number of…

In an atom, the number of protons equals the number of ELECTRONS.

(usually)because nature wants balance.

MMMMMKAAAY!This will help with the test but your paper study guide is more complete. If you can

NOT answer all the blank questions of your SG without looking at your answers you

have not studied enough. Study until you know it ALL.