Science SEP Flashcards
Anything that has mass or takes up space:
Matter
The smallest particle of an element:
Atom
A pure substance made of only one kind of atom:
Element
A particle in the nucleus of an atom that has a positive electric charge:
Proton
A particle in the nucleus of an atom that has no electrical charge:
Neutron
A negatively charged particle that occupies the outer part of an atom:
Electron
The force that holds together the nucleus of the atom:
Strong Force
The center of the atom which contains the protons and neutrons:
Nucleus
Located at the top of a symbol card. Shows how many protons are in an element:
Atomic Number
Abbreviation of the element’s name
Atomic Symbol
Very energetic, negatively charged particles that move in all directions around the nucleus of an atom are:
Electrons
Hydrogen and oxygen are classified as:
Elements
Which of the following is an example of a homogeneous mixture?
a milk
b pizza
c Chex mix
d Italian dressing
Milk
Which of the following is an example of a heterogeneous mixture?
a urine
b apple juice
c Chex mix
d milk
Chex mix
A group of two or more atoms held together by bonds:
Molecule
A formula giving the number of atoms of each of the elements present in one molecule of a specific compound:
Molecular (or chemical) Formula
A substance made of two or more elements but they are NOT chemically combined:
Atomic Symbol
A mixture where it is difficult or impossible to see the different parts:
Homogenous
If I know the atomic number, what else do I know about the element?
Number of protons and electrons
How many hydrogen atoms are in the compound C6H12O6?
12 hydrogen atoms
What is a mixture that is not chemically bonded?
Heterogenous
What is an organized grid of pure substances?
Periodic Table of Elements
What particles are contained in the nucleus of an atom?
Protons and neutrons
What is the difference between a compound and a mixture?
Compounds are chemically bonded atoms and mixtures can include different atoms or molecules.
Which is an example of a mixture?
a K
b F + H2O
c Na
d C6H12O6
b F + H2O
When the element Iron bonds together with the element Oxygen it forms Ferrous Oxide (FeO), which statement describes the outcome?
Ferrous Oxide (FeO) is a compound.
If I have a compound molecule with 4 Hydrogen atoms in it and 1 Oxygen atom, which molecular formula below represents the molecule?
H4O
Which of the following items are considered pure substances?
Element
