Testingn Questions Flashcards
what are some properties of an acid?
- pH 0-6.999
- reacts with metals to produce H2 gas
- reacts with compounds containing carbonates (CO2) i.e. baking soda
- sour taste
- burn your skin
- conducts electricity
what are some properties of a base?
- bitter taste
- bitter taste
- feel slippery and concentrated bases will burn skin
- conducts electricity
what’s the difference between reactants and products?
reactants- chemicals present at start of the chemical reaction but then is used up during chemical reaction
products- chemicals that are produced during a chemical reaction
name the types of chemical reactions?
- synthesis reaction
- decomposition reaction
- single displacement reaction
- double displacement reaction
- combustion reaction
- neutralization reaction
What’s the Law of Conservation Mass?
In any given chemical reaction, the total mass of the reactants equal the total mass of products
(Balancing Equations)
What kind of ions have more protons (p+) than electrons (e-)?
Cations are the ions that have more protons than electrons
is the following compound, molecular or ionic?
“sulfur dioxide”
molecular compound
because of the molecular prefix beside oxygen
is the following compound, molecular or ionic?
“sodium hydroxide”
ionic compound
because hydroxide is a polyatomic ion. polyatomics are never used in molecular compounds
what are some indicators that a chemical change is happening?
new odor heat or light bubbles (new gas) new precipitate new color
physical changes
color smell taste density boiling point
