Which of these elements is a liquid at room temperature?
Question 3
3.
Which of the following is a compound?
Question 4
4.
What is the name of the compound formed when sodium (Na) and chlorine (Cl) chemically combine?
Question 5
5.
What does the prefix "di-" mean in the name of a compound molecule containing oxygen?
Question 6
6.
Imagine a beaker containing only oxygen molecules (O2). What type of substance is in the beaker?
Question 7
7.
Which of the following is the fundamental building block of all matter?
Question 8
8.
By chemical means, atoms are considered to be the:
Question 9
9.
Which of the following best describes a substance made up of only one type of atom?
Question 10
10.
How are elements primarily organized on the modern periodic table?
Question 11
11.
What do the vertical columns on the periodic table represent?
Question 12
12.
Where are the non-metal elements located on the periodic table?
Question 13
13.
In general, where are the metallic elements located on the periodic table?
Question 14
14.
What is the symbol for the element with atomic number 8?
Question 15
15.
Which of the following is the name of the element with the symbol 'Ca'?
Question 16
16.
Which of these elements is a gas at room temperature?
Question 17
17.
which element is a liquid at room temperature?
Question 18
18.
What is the chemical symbol for lead?
Question 19
19.
The "staircase" line on the periodic table primarily separates:
Question 20
20.
Which of the following is a typical property of metals?
Question 21
21.
Which of the following is a typical property of non-metals?
Question 22
22.
An element is shiny, conducts electricity well, and can be bent easily. This element is most likely a:
Question 23
23.
What is formed when two or more different elements are chemically joined together?
Question 24
24.
When iron filings and sulfur powder are heated strongly together, they:
Question 25
25.
Why can a mixture of sand and water be separated by filtration, but the hydrogen and oxygen in water cannot?
Question 26
26.
What is the name of the compound formed between magnesium (Mg) and bromine (Br)?
Question 27
27.
What is the name of the compound with the formula Na2SO4?
Question 28
28.
Following the rules for naming simple compounds, what would be the likely name for the compound K2O?
Question 29
29.
Which of the following substances exists as molecules?
Question 30
30.
Which of the following elements exists as a molecule containing two atoms joined together (diatomic)?
Question 31
31.
What is the name of the compound with the formula NO?
Question 32
32.
What is the name of the compound with the formula PCl3?
Question 33
33.
A diagram shows several separate circles of the same colour. This diagram most likely represents:
Question 34
34.
A diagram shows two different coloured circles joined together. This represents:
Question 35
35.
A diagram shows a collection of separate red circles and separate blue circles. This represents:
Question 36
36.
If you were to draw a molecule of carbon dioxide (CO2), how many oxygen atoms would be bonded to each carbon atom?
Question 37
37.
Which of the following gases is present in the smallest percentage in the Earth's atmosphere today?
Question 38
38.
Compared to pure water, a mixture of salt and water will generally have a:
Question 39
39.
If adding a solute to a solvent causes the boiling point to increase according to a given equation, what would happen to the boiling point if you added more of the same solute?
Question 40
40.
What is shown in each of these diagrams?
Question 41
41.
In Year 7 Physics you learnt about protons, neutrons and electrons
Which of these are used to put the elements in their order on the periodic table?
Question 42
42.
By what percentage would we expect the volume to decrease?
Question 43
43.
If we started with 100 cm3 of air what volume of nitrogen would we end up with?
Question 44
44.
If we started with 100 cm3 of air what percentage of nitrogen would we end up with?