True or False:
Compounds are elements chemically combined that have the same properties as the elements that were combined?
FALSE......they are different
100
What is the system used to measure properties of matter?
What is International System of Units or SI
100
find the volume.....remember all the parts of the answer!!!
12 feet wide
5 feet long
10 feet tall
600 cubic feet
100
What is the slow combination of a bright metal with sulfur or another substance....causing a dark coat?
What is tarnishing
200
If something can break, be magnetic, be flexible but not change to another substance it is a chemical or physical characteristic?
What is physical
200
In a mixture does each substance keep its individual properties
yes they do
200
What is the measurement of the amount of matter in an object?
What is mass
200
Calculate the density....
Density = mass / volume
a small block of wood has a density of 300g and a volume of 200 cubic cm.
What is the density
What is 1.5 g/cubic cm
200
what is the slow combination of a substance with oxygen?
What is oxidation....rust
300
Tarnishing, rising of dough and rusting are all chemical or physical properties?
What is chemical property?
300
Is a salad a heterogeneous or homogenous mixture?
What is heterogeneous....you can see the different parts
300
What is the measure of the force of gravity on something?
What is weight
300
what is the volume? remember formula.......remember all parts of answer.
25 ft wide
5 feet tall
15 ft long
What is 1875 cubic feet
300
what is the use of electricity to break a compound into elements? water = hydrogen and oxygen
What is electrolysis
400
Oxygen, hydrogen and Carbon are all atoms or elements?
What are elements
400
Look at the picture on pages 14 and 15. "separating a mixture". What are the 3 additives used to separate the mixture?
What is iron, sulfur and salt
400
Does mass change with location?
No
400
DOUBLE DAILY!!
A piece of metal has a volume of 38 cubic cm and a mass of 277 g
Calculate the density of the metal and identify it based on the information below:
Iron 7.9 g/cubic cm
Lead 11.3 g/cubic cm
tin 7.3 g/cubic cm
Zinc 7.1 g/cubic cm
What is tin
400
What is the burning of gas, oil or coal in a furnace?
combustion,
oxidation or tranishing
What is combustion
500
What is the force attraction between two atoms?
What is chemical bond?
500
Distillation is used to separate different components of a mixture. What do you do to distill? use page 14 for a reference.
What is to distill you boil
500
What is the formula for finding volume?
lenght times weight times height
500
The density of water is 1 g/cubic cm.
If something has a density of 5 g/cubic cm.....what will the object do when placed in water?
What is sink
500
If you have warmed your hands by placing them near a fire.......are you taking advantage of exothermic change or endothermic change?
What is exothermic change....the release of energy from heat or light