8th Grade Chemistry
Terms
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- What is the symbol for Sulfur?
- S
- What are four characteristics of a metal?
-
shiny
good condutors of heat and energy
ductile
malleable - Phosphorus
- 15
- What is the symbol for Iron?
- Fe
- All atoms of the same element have the same number of what?
- Protons
- Mg 2+
-
10
- Give the number of electrons in atoms of mercury
- 80
- A(n) what has some properties of both metals and nonmetals?
- metalloid
- Name the family of Neon
- Noble Gas Family
- What is the symbol for Hydrogen?
- H
- The person who is credited for publishing the firs useable periodic table is whom?
- Mendeleev
- Iron
- 26
- What kind of change occurs when whiteout is used to fix a mistake?
- Physical
- Give an exaple of an alloy
- 14K gold
- What kind of chane is occurin when gree food coloring is added to water and the water turns green
- physical
- Name the family of sulfur
- Oxygen Family
- Give an example of a metal
- iron
- What kind of change is occuring when table sugar is beint heated to make caramel
- Chemical
- A pure substance that cannot be broken down into any other substance is called a what?
-
element
- What is the chemical for Ca?
- Calcium
- What is the symbol for gold?
- Au
- What is the subatomic particle with a negative charge?
- Electron
- Neon
-
20.183
- The one with the positive charge is called a(n)...
- proton
- What is the symbol for Nitrogen?
- N
- What is the symbol for Magnessium?
- Mg
- What is the symbol for carbon?
- C
- What is the symbol for Potassium?
- K
- The building blocks of matter are called
- atoms
- What is the symbol for sodium?
- Na
- Copper
- 29
- What is the symbol for Copper?
- Cu
- What is the symbol for Lead?
- Pb
- Calcium
-
40.80
- A cubic centimeter is a unit for measuring what?
- Volume
- What is the symbol for silver?
- Ag
- Potassium
- 39.102
- What is a charged particle called?
- ion
- Give the number of protons in atoms of oxygen.
-
8
- lead
- 82
- The three subatomic particles of an atom are what?
- Proton, eletron, and neutron
- S 2-
- 18
- Name the family of Chlorine
- Halogen Family
- Burning leaves is an example of what kind of change?
-
Chemical
- Freezing an what can occur at the same temperature. It just depends on whether heat is being added or taken away~
- melting
- The columns in a periodic table are called what?
- Family
-
Name the elements in the compound
NaAlO2
The two needs to be under the O - Sodium, Aluminus and Oxygen
- Ag2S
- Silver and Sulfur
- Name the family of lead
- Carbon family
- New substances are formed during what kind of changes?
- Chemical
- A physical change changes the what of a substance
- appearance
- Pull out a periodic table and give the atomic mass of silver.
- 107.870
- What found on a periodic table gives you the number of protons found in each atom of an element?
- Atomic Number