No new substance is created during a physical change, although the matter takes a different form.
100
Which metal is liquid a room temperature? And what is it used for?
Mercury. Thermometer
100
How many elements have been discovered in earth’s rocks, soil, air and water.
92
200
The Symbol for Silver
Ag
200
U
Uranium
200
Define a Chemical Change
In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. A chemical change is a process where one or more substances are altered into one or more new and different substances.
200
List 2 physical properties of a metal
Good electrical conductors and heat conductors.
Malleable - can be beaten into thin sheets.
Ductile - can be stretched into wire.
Possess metallic luster.
Opaque as thin sheet.
Solid at room temperature (except Hg).
200
Name 4 of the elements used in the conduction of electricity experiment
sulfur, iron, zinc, tin, sulfur, carbon
300
Xenon and Bromine
XE and Br
300
Potassium
K
300
List 3 physical changes
crushing a can, melting an ice cube, boiling water, mixing sand and water, breaking a glass, dissolving sugar and water, shredding paper, chopping wood
300
List 3 properties of non metals
Poor conductors of heat and electricity.
Brittle - if a solid.
Nonductile.
Do not possess metallic luster.
Transparent as a thin sheet.
Solids, liquids or gases at room temperature.
300
How do you spell my last name?
Vincze
400
Symbol for Iron
Fe
400
Mg
Magnesium
400
List 3 chemical Changes
lighting a candle, cooking an egg, mixing baking soda and vinegar to produce carbon dioxide gas, baking a cake, explosion of fireworks, rotting bananas, grilling a hamburger, milk going sour
400
List a metalloid
The metalloids; boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At) are the elements found along the step like line between metals and non-metals of the periodic table.
400
The most abundant element in the universe is?
Hydrogen
500
Symbol for Carbon, Hydrogen, Oxygen and Nitrogen
C, H, O, N
500
S, P, Na
Sulfur, Phosphorus, Sodium
500
list 3 ways a physical change can occur, and 3 ways a chemical change can occur
Physical: melting, boiling, breaking, cutting, dissolving. Chemical: produces bubbles, turns cloudy, temperature change, colour change, change in taste and smell.
500
What is the Fictional metal called which Wolverines skeleton is made of?
Adamantium
500
What is the most abundant element in the human body?