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Q 1/40
Score 0
Which of the following is NOT true about chemical properties?
30
Chemical change must occur for a chemical property to be observed and measured.
Chemical properties are not readily seen that is the reason why chemical
containers have labels indicating their chemical property.
It can only be determined if there is a change in the molecular structure of a substance.
Chemical properties are those that can be identified directly without changing the identity or composition of a material.
Q 2/40
Score 0
What can you use to separate pieces of iron from pieces of aluminum?
30
Boil them
Multi-meter tester
Magnet
thermometer
40 questions
Q.
Which of the following is NOT true about chemical properties?
1
30 sec
Q.
What can you use to separate pieces of iron from pieces of aluminum?
2
30 sec
Q.
The chemical name of ________________ is sodium chloride.
3
30 sec
Q.
What is the chemical name of white vinegar?
4
30 sec
Q.
____ refers to the constituents or composition of a product
5
30 sec
Q.
What do you call the goods that are bought for consumption by the average
consumer?
6
30 sec
Q.
Which of the following mixtures could NOT be used in separating the
components of mixtures through decantation?
7
30 sec
Q.
____ is the process of separating the insoluble solid from the liquid substance by allowing the liquid to pass through a porous material.
8
30 sec
Q.
Which method uses the boiling point differences by gradually heating a mixture to separate parts of a liquid mixture?
9
30 sec
Q.
Condensing means transforming from _____ to _____
10
30 sec
Q.
The atomic number of an atom is based upon the number of _______.
11
30 sec
Q.
What is a radioisotope?
12
30 sec
Q.
The atomic mass number for carbon-14, meaning that carbon atoms have ____________.
13
30 sec
Q.
Which of the following isotopes is used in medical diagnostic procedures?
14
30 sec
Q.
Which of the following isotopes is used in industrial processes?
15
30 sec
Q.
Isotopes are atoms with a variable number of ____________.
16
30 sec
Q.
A formula with the lowest whole # ratio of elements in a compound is called
17
30 sec
Q.
A compound has a molecular formula of C12H24O6. What is this compound's empirical formula?
18
30 sec
Q.
The simplest formula of a substance shows:
19
30 sec
Q.
A chemical formula that shows the actual # and kinds of atoms present in one
molecule of a compound is called ____________.
20
30 sec
Q.
All of the following are empirical formulas EXCEPT
21
30 sec
Q.
Which of the following pairs of elements would most likely form an ionic compound?
22
30 sec
Q.
Consider a mystery compound having the formula MxTy. If the compound is not an acid, if it contains only two elements, and if M is not a metal, which of the following is true about the compound?
23
30 sec
Q.
Al3(SO4)2
24
30 sec
Q.
What is the name of H2SO3?
25
30 sec
Q.
Covalent compounds are more stable than ionic compounds.
26
30 sec
Q.
Electrons are negatively charged.
27
30 sec
Q.
The Chemical formula of Calcium Hydroxide is Ca2OH.
28
30 sec
Q.
Chemical compounds used for commercial purposes are more concentrated than those for Industrial use.
29
30 sec
Q.
Transformation of water to ice is a physical change.
30
30 sec
Q.
Chemical formula of Magnesium Hydroxide
31
30 sec
Q.
What is the molecular mass of Magnesium Hydroxide?
32
30 sec
Q.
What is the percentage composition of Oxygen in Magnesium Hydroxide?
33
30 sec
Q.
What is the Percentage composition of Hydrogen in Magnesium Hydroxide?
34
30 sec
Q.
What is the percentage composition of Magnesium in Magnesium Hydroxide?
35
30 sec
Q.
If we have 100 grams of Magnesium Hydroxide, how many moles of oxygen are present?
36
30 sec
Q.
If we have 100 grams of Magnesium Hydroxide, how many moles of Magnesium are present?
37
30 sec
Q.
If we have 100 grams of Magnesium Hydroxide, how many moles of Hydrogen are present?
38
30 sec
Q.
What type of compound is Magnesium Hydroxide?
39
30 sec
Q.
Type of chemical bond that holds Magnesium and Hydroxide ions together.
