MLT 102 Test 1 review P1

Substance whose atoms tend to gain electrons, poor conductions, gases at room temperature

equal to the sum the number of protons and neutrons

Examples: Color, hardness, temperature, boiling point, melting point, specific gravity

The Metalloid group separate the metals, nonmetals, exception

The study of life at the molecular level and the processes associated with life

What is a small, dense, positively charge region in the center is the atom

Decrease from left to right and from bottom to top in the periodic table

A substance that cannot be broken down by chemical means, identifying by the number of protons in its atom

Result in a change in composition that can be observed only through chemical reactions

A valid hypothesis must be

Characteristics of the elements is

The force that holds atoms or ion together in a chemical compound

Elements whose atoms have an incomplete D sub-shell

The vertical columns on the periodic table consisting of elements that share periodic properties

Increase from left to right and up a group

Form negatively charged anions, gaining electrons, nearest noble gas element

Which one is pure substance

The principle that bond atoms share their eight outer electrons, thus giving atom a valence shell resembling a noble gas

Has only one component and can be either chemical elements or compounds

Positive ion as known as, smaller than the parent atom

Shell or orbital in which the electron is located relative to the atom’s nucleus

An atom or molecule which has different number of protons than electrons and thus a net electrical charge

Form positively charged cations, loss the electrons to obtain a noble gas configuration

Chocolate chip cookies dough is

Particle are close together, definite volume but no definite shape

The study is matter and energy and the interaction between them

Involves the transfer of one or more electrons from one atom to another

Increase from left to right and bottom to top in the periodic table

Which has the properties of a nonmetal at normal temperatures and pressure

State the properties of element recur in a predictable and system way when they are arranged by increasing atomic number

acquiring knowledge and solving problems through observation, description of an observation phenomenon

A chemical link between atoms or ion in which electron pairs are share

Group A element are call

Tend to form positive ions by losing electrons

Group IA elements are also known as

Can be observed or measured without changing the composition or identify of a substance

Anything that has mass and volume (take up space)

A chemical change that occurs when two or more substances combine to form a new substance

Measure of the ability of an atom to accept an electron

The number of protons determines the identity of?

Mixture of salt and water is

Particles that are close together, particle arrangement, fixed shape and volume

Elements in which all of the inner shells are complete but outer shells are incomplete

Force of attraction between any two atoms in a compound

The positively charged center of the atom, consisting of protons and neutrons

Total mass of the protons, neutrons and electrons in a single atom when at rest

A state of matter that has no fixed shape and no fixed volume

Which metal are solids at room temperature

An attractive force between ions resulting in electron transfer

Horizontal rows of the periodic table, elements with the same highest unexcited electron energy

Which one is heterogeneous

Statement that describes an observation occurrence in nature that appears to always be true

The number of protons in the nucleus of the atom of the element

Boron (B), silicon (Si), germanium (Ge), Arsenic (As), antimony (Sb), tellurium (Te), example for

Element with a high _ will release a large amount of energy

A particle in the atomic nucleus that has a mass of 1 and net neutral electrical charge

An idea or explanation that can be tested through study and experimentation

Particle are widely separated, no definite shape or volume

Which series belong to period 7

What is series belong to period 6

The study of matter that consists of all the elements other than carbon and hydrogen and their combinations

Isotopes have the same mass number

A property of matter that changes with the amount of matter in a sample

The ability to do work, when work is movement of an object by some force

What is surrounding the nucleus is a different region of negative charge populated

The study of matter that is composed principally of carbon and hydrogen

A substance with high electrical conductivity, luster, and malleability, lose electrons to form positive ion (cation)

A process for experimentation that is used to explore observation and answer question

Group B elements are called

A board area of science covering everything from the simple atom to interactions between complex molecules

Example of mass and volume

A mixture in which the components of the mixture are not uniform

Elements that tend to gain electrons to form negative ions (anion) during chemical reaction

The energy required to completely remove an electron from an atom

A set of statements or principles devised to explain a group of facts or phenomena

Example of iron rusting, wooden burning, banana rotting

Chemical species formed when two or more atoms form a chemical bond

The outermost electron most likely to participate in bond formation or a chemical reaction

What are these steps for scientific method

Element that has both metallic and nonmetallic properties

Substance that are made of only one type of atom or one type is molecule

What is the basic structure unit of an element

Three primary particles:

Ice melting, chopping wood, shredding paper are example for

Negative ion as known as, larger than the parent ion

Substance made by combining two or more different material in such a way that no chemical reaction occurs

Characteristics of a material that become evident when the material undergoes a chemical reaction

Analysis of matter to determine its composition and the quantity of each kind of matter that is present

A state of matter characterized by particles arranged in such a way that their shape and volume are relatively stable

Component of the atomic nucleus with a defined mass of 1 and charge of +1

A discipline that attempts to explain the way in which matter behaves

Group VIIIA elements are also known as

Substance whose atoms tend to lose electrons, luster, conduct heat and electricity well

A mixture in which the composition is uniform throughout the mixture

Characteristics of matter that may be observed and measured without changing the identity of the sample

The higher the _ , the more difficult it is to remove an electron

Atoms has the same number of protons but different numbers of neutrons, different atomic weight values

Straddle the boundry between metals and nonmetals

A property of matter that does not change as the amount of matter changes

Alternative forms of elements with different molecular weight that are found in naturally, do not decay radioactivity