Definitions 1
Definitions 2
Definitions 3
Definitions 4
Definitions 5
100

What has mass and volume that gives its density.

matter

100

What is the nucleus composed of in an atom?

protons and neutrons

100

What is the atomic number?

The number of protons in an atom.

100

How do you find the atomic charge?

Subtract the number of protons and the number of electrons.

100

What elements are fairly stable, ductile, malleable, and conduct electricity and heat?

transition metals

200

What is the simplest type of pure substance?

an element

200

Which part of the atom is positively charged?

protons

200

What is the atomic mass?

The number of protons and neutrons added together.

200

What are the elements called that have atoms with a complete outer shell of electrons and do not react?

Noble gasses

200

This part of the periodic table has the same number of electrons in the last orbital and act similar when reacting.

family or group (the columns)

300

What is the inside section of an atom?

nucleus

300

What part of the atom has no charge (neutral)?

neutrons

300

What do you get when you change the number of electrons?

a different ion

300

What elements have 1 or 2 electrons in the out shell and want to lose one or two of those electrons-- VERY reactive?

metals

300

This part of the periodic table has the same number of orbitals.

period (rows)

400

What is the smallest piece of an element?

an atom

400

What part of the atom is negatively charged and orbits the nucleus?

electrons

400

What do you get when you change the number of protons?

a different element

400

What elements have 6 or 7 electrons in the outer shell and want to gain an electron or two--VERY reactive?

non-metals
400

A. Which bond is a nonmetal taking an electron from a metal?

B. Which bond are two nonmetals that share valence electrons?

A. ionic

B. covalent

500

A. What substance is made by putting together other substances with no set ratios and not chemically combined?

B. What is a homogeneous mixture composed of two or more substances?

A. mixture


B. Solution

500

What are the shells around the nucleus called?

orbitals

500

What do you get when you change the number of neutrons?

a different isotope

500

What elements have the properties of both metals and non-metals and are used as semiconductor computer chips?

metalloids

500

A. What is a pure substance that is made of 2 or more elements chemically combined?


B. What is the smallest piece of a compound?

A. Compound

B. Molecule

M
e
n
u