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Q 1/64
Score 0
Which subatomic particle has a positive charge?
30
Electron
Neutron
Proton
Photon
Q 2/64
Score 0
Which process involves the conversion of a solid directly into a gas?
30
Condensation
Sublimation
Melting
Evaporation
64 questions
Q.
Which subatomic particle has a positive charge?
1
30 sec
Q.
Which process involves the conversion of a solid directly into a gas?
2
30 sec
Q.
Which element is the most abundant in Earth's atmosphere?
3
30 sec
Q.
What is the chemical symbol for Gold?
4
30 sec
Q.
What is the pH value of a neutral substance?
5
30 sec
Q.
What is the chemical formula for water?
6
30 sec
Q.
Which gas is essential for respiration in humans?
7
30 sec
Q.
What is the smallest unit of an element that retains its chemical properties?
8
30 sec
Q.
Which of the following is an example of a physical change?
9
30 sec
Q.
Which of the following elements is a noble gas?
10
30 sec
Q.
Which gas do plants use for photosynthesis?
11
30 sec
Q.
What is the atomic number of oxygen?
12
30 sec
Q.
What is the pH scale used to measure?
13
30 sec
Q.
Which subatomic particle has no electrical charge?
14
30 sec
Q.
Which subatomic particle orbits the nucleus of an atom?
15
30 sec
Q.
Which subatomic particle is responsible for carrying a negative charge?
16
30 sec
Q.
Which subatomic particle determines an element's identity?
17
30 sec
Q.
Which subatomic particles contribute to the atomic mass of an atom?
18
30 sec
Q.
What is the approximate atomic mass of a carbon atom?
19
30 sec
Q.
Which element has the highest atomic mass?
20
30 sec
Q.
What is the relationship between atomic mass and the position of an element on the periodic table?
21
30 sec
Q.
Which of the following is a physical property of matter?
22
30 sec
Q.
Which of the following is a chemical property of matter?
23
30 sec
Q.
Which of the following is a physical change?
24
30 sec
Q.
Which of the following is NOT a physical property of matter?
25
30 sec
Q.
Which of the following is a chemical change?
26
30 sec
Q.
Which of the following is a physical property of a metal?
27
30 sec
Q.
Which of the following is NOT a physical change?
28
30 sec
Q.
Which of the following is a physical property of matter?
29
30 sec
Q.
Which of the following is a chemical property of matter?
30
30 sec
Q.
Which of the following is a physical property of matter?
31
30 sec
Q.
Which of the following is a chemical property of matter?
32
30 sec
Q.
Which of the following materials is NOT typically ductile?
33
30 sec
Q.
Which of the following is an example of a ductile material commonly used in construction?
34
30 sec
Q.
Which of the following is an example of a heterogenous mixture?
35
30 sec
Q.
Which of the following is an example of a heterogenous mixture?
36
30 sec
Q.
Which of the following is an example of a homogenous mixture?
37
30 sec
Q.
Which of the following is an element?
38
30 sec
Q.
Which of the following is a compound?
39
30 sec
Q.
When balancing a chemical equation, what must be done to ensure that the number of atoms on the reactant side is equal to the number of atoms on the product side?
40
30 sec
Q.
What is the purpose of balancing a chemical equation?
41
30 sec
Q.
What is used to separate the reactants and products in a chemical equation?
42
30 sec
Q.
To balance the chemical equation H2 + O2 -> H2O, what coefficients must be added?
43
30 sec
Q.
In balancing a chemical equation, what does the Law of Conservation of Mass state?
44
30 sec
Q.
What is the correct coefficient for oxygen (O2) to balance the equation CH4 + O2 -> CO2 + 2H2O?
45
30 sec
Q.
In the balanced chemical equation 2H2 + O2 -> 2H2O, how many atoms of hydrogen are on the reactant side?
46
30 sec
Q.
To completely react 2Al + 3CuO -> Al2O3 + 3Cu, how many atoms of copper (Cu) are produced?
47
30 sec
Q.
When balancing the chemical equation Na + Cl2 -> NaCl, what is the correct coefficient for NaCl?
48
30 sec
Q.
Which group of elements on the periodic table is known as the 'noble gases'?
49
30 sec
Q.
Which element is the most abundant in the Earth's crust?
50
30 sec
Q.
Which element is known as the 'universal solvent'?
51
30 sec
Q.
Which element is the lightest and most abundant in the universe?
52
30 sec
Q.
Which of the following elements is an alkaline earth metal?
53
30 sec
Q.
Which halogen is found in table salt?
54
30 sec
Q.
Which chemical element is considered a metalloid?
55
30 sec
Q.
Which of the following elements is considered a transition metal?
56
30 sec
Q.
Which of the following transition metals is widely used in jewelry due to its lustrous appearance?
57
30 sec
Q.
Which transition metal is known for its use in coins and electrical wiring due to its high conductivity?
58
30 sec
Q.
Which transition metal is commonly used in magnets due to its strong magnetic properties?
59
30 sec
Q.
Which of the following is a chemical change?
60
30 sec
Q.
Which of the following is an indication of a chemical change?
61
30 sec
Q.
Which of the following is an indication of a chemical change?
62
30 sec
Q.
Which of the following is an indication of a chemical change?
63
30 sec
Q.
Which of the following is NOT an indication of a chemical change?
