IPC Semester Test Review

Whether an object will sink or float in a fluid is determined by

Archimedes' principle

what's the correct order for the scientific method?

1. State the problem 2. Gather information 3. Form a hypothesis 4. Test hypothesis 5. Analyze the data 6. Draw conclusions

the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. This statement is ___

Archimedes' principle

Who created the periodic table?

Dmitri Mendeleev

Thermal expansion is a decrease in the size of a substance when the temperature is increased

False

the temperature at which a solid begins to liquify is its ______ point

melting

what is silicon

metalloid

All ____ except mercury are solids at room temperature.

metals

Sodium(Na) and Potassium(K) are both

metals

Electrons have a ________ charge.

negative

When a log burns in a fire __________________ ?

new substances are formed

what is neon

noble gas

a(n) _____ is a mixture that settles upon standing

suspension

the jars going from darker to lighter is an example of ___

suspension

the following are examples of a chemical property except ______

the ability to be crushed

what is iron

transition metal

The amount of space occupied by an object is its-

volume

H2O is also known as

water

____ is another name for a homogeneous mixture.

solution

1. 1,000 2. 0.1 3. 0.01 4. 0.001 5. 0.000001 6. 0.000000001

1. kilo 2. deci 3. centi 4. milli 5. micro 6. nano

A gas occupies 3.60 liters at a pressure of 1.12 kPa, what will be it's volume at at pressure of 4.00 kPa

1.008 liters

What is the correct volume for the picture shown? (Beaker)

115

14km= ________________m

14,000m

What is the group number for elements that have a stable number of electrons in their outer energy level?

18

A beaker contains 0.32 L of water. What is the volume of this water in milliliters?

320

convert 3.3 centigrams to milligrams

33 mg

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is _____

56

what is the total number of atoms in the compound NH4Cl

6

How many electrons are needed in the outer energy level of the most atoms for the atoms to be chemically stable

8

1,800mL ____ 1.8L

=

The equation P1V1=P2V2 applies to

Boyle's law

Use your periodic table to determine which of these elements is most similar to Magnesium (Mg)

Calcium (Ca)

Which of the following notations represents a molecule

H2O

In applying Charles's law, temperature must be on the _____ scale.

Kelvin

When designing an experiment, the first step is to

State the problem

Why are elements in group 18 all stable

Their outer energy levels are full of electrons

a rotting apple is an example of

a chemical change

The elements that make up a compound and the exact number of atoms of each element in a unit of the compound can be shown as ___

a chemical formula

Coffee is an example of a _______________

a homogenous mixture

The following are examples of physical properties EXCEPT

ability to react with oxygen

What is lithium

alkali metal

what is calcium

alkaline earth metal

the smallest piece of an element that still retains the properties of the element is a(n)

atom

All substances are built from

atoms

In a chemical formula, the number of each type of atom in the compound is shown by the numbers called

subscripts

Three examples of physical change are

boiling of water, bursting of a balloon, and crumpling a piece of paper

Three examples of physical change are

boiling of water, bursting of a balloon, and melting of a candle

Which of the following is an example of a chemical change

burning paper

which of the following elements will likely form a negative ion in an ionic compound?

chlorine

Fog is an example of a ____.

colloid

What do two or more elements combine to form?

compound

a ___ is not a mixture

compound

A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the

control

A factor that changes in an experiment from manipulation of the independent variable is the

dependent variable

The process for separating substances in a mixture by evaporating a liquid and condescending its vapor is called

distillation

In carbon dioxide, each oxygen atoms shares two pairs of electrons with the carbon atom. what type of bond is that called.

double covalent

A particle that moves around the nucleus is

electron

Each inner energy level of an atom has a maximum number of ____ it can hold.

electrons

The energy levels of an atom are occupied by

electrons

Compare and contrast the masses of protons, neutrons, and electrons

electrons have much less mass than protons or neutrons

Copper, sulfer, and oxygen are examples of

elements

An organized process used to gather observations and test a hypothesis is a(n)

experiment

temperature is defined as the average potenitial energy of particles in a substance

false

A chemical ______ tells what elements a compound contains and the exact number of the atoms of each element

formula

Elements that are in the same ______ have the same number of _____ in their outer energy level.

group;electrons

what is chlorine

halogen

The amount of energy required for a liquid at its boiling point to become a gas is ______

heat of vaporization

Aspartame is an artificial sweetener; its formula is C13H16N2O5. Which element in the formula has the largest number of atoms?

hydrogen

a ____ is a possible explanation for a problem using what you know and what you observe.

hypothesis

what is lanthanum

inner transition metal

A charged particle is known as a ____

ion

Atoms of the same element with different numbers of neutrons are called

isotopes

A(n) _________ is a mixture that doesn't scatter light

solution

Most of the mass of an atom is found in its

nucleus

Dot diagrams are used to represent

outer level electrons

Some elements are unlikely to lose or gain electrons, but share to form covalent bonds. Which of the following elements is most likely to form covalent bonds?

oxygen

Phosphorus and Sulfur are in the same

period

The horizontal rows on the periodic table are called

periods

The color of ink is a _____________ property

physical

a change in size, shape, or state of matter is called a _____ change

physical

The crushing of a can is an example of a

physical change

Density is an example of a

physical property

any characteristic of a material that can be observed or measured without changing the composition of the substances in the material is a

physical property.

In the compound H2O, the electrons in the bonds are unequally shared, making it a ___

polar molecule

Protons have a _______ charge.

positive

The nucleus of an atom is ______ charged

positively

Particles of matter that make up protons and neutrons are

quarks

Magnetism easily separates what mixture?

sand and iron

the attraction between particles gives a solid definite ___

shape and volume

Ice is an example of what state of matter?

solid