Font size
WorksheetsAssignment
Total questions: 25
Worksheet time: 21mins
Which of the following is indicates as a chemical properties?
Volume
Luster
Density
Corrosivity
A(n) .......................... is a transition from one state of matter to another.
Phase change
Intensive change
Extensive change
Chemical change
A percentage determined by the ratio of the mass of each element to the total mass of the compound is called the ........................... .
Molar mass
Percent by mass
Atomic mass
Percent weight
What is the differences between mixture and substances?
Define physical change?
Seawater is composed of salt, sand, and water. Is sea water a heterogeneous or homogeneous mixture? Explain.
Cooking egg identified as ........................
Chemical change
Physical change
What is the mass of a product if the reactants have mass of 44.6 grams (Iron) and 12.8 grams (Oxygen)
31.8 grams
571 grams
57.4 grams
3.48 grams
Identify the product in this chemical reaction?
Methan + Oxygen
Carbon dioxide + Oxygen
Carbon dioxide + Water
Oxygen + Water
When a 9.0 g piece of magnesium ribbon, Mg, is heated in 8.0 g of oxygen atmosphere, O2, white ashes of magnesium oxide, MgO, are formed according to the reaction below:
1.0 gram
17.0 grams
72.0 grams
14.0 grams
Compound is made from the atoms one or two or more elements that are chemically combined.
True
False
The periodic table organizes the elements into a grind of horizontal rows called ......................... .
Families
Groups
Periods
Friends
If 3.5 g of X reacts with 10.5g of Y to form the compound XY, what is the percent by mass of X in the compound?
25%
50%
75%
14%
Define an electron?
The nucleus is ....................... charged
Positively
Negatively
Neutral
Explain why atoms are electrically neutral?
Atoms are made of three subatomic particles identify them?
what is the process that turns a gas to liquid ?
Melting
Condensation
Freezing
Evaporation
What are the state of matter ?
Solid , Liquid , Juice
Solid and Liquid
Solid , liquid and Gas
Solid and Gas
Two decomposition of 18.0g of water resulting in 16.0 g of Oxygen and 2.0 g of Hydrogen. Find the mass ratio of Oxygen-to-Hydrogen.
What is the number of neutron ?
12
11
10
9
What is the proton number ?
12
11
10
9
Who made this experiment?
Thomson
Milikan's
Rutherford's
Who made this experiment ?
Milikan's
Retherford's
Thomson
What is the difference between gas and vapour?
(a)
