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Elements mixtures and compounds 1

Last updated 5 months ago
44 questions
1

Which of the following statements is TRUE?

1

Which of these elements is a liquid at room temperature?

1

Which of the following is a compound?

1

What is the name of the compound formed when sodium (Na) and chlorine (Cl) chemically combine?

1

What does the prefix "di-" mean in the name of a compound molecule containing oxygen?

1

Imagine a beaker containing only oxygen molecules (O2). What type of substance is in the beaker?

1

Which of the following is the fundamental building block of all matter?

1

By chemical means, atoms are considered to be the:

1

Which of the following best describes a substance made up of only one type of atom?

1

How are elements primarily organized on the modern periodic table?

1

What do the vertical columns on the periodic table represent?

1

Where are the non-metal elements located on the periodic table?

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In general, where are the metallic elements located on the periodic table?

1

What is the symbol for the element with atomic number 8?

1

Which of the following is the name of the element with the symbol 'Ca'?

1

Which of these elements is a gas at room temperature?

1

which element is a liquid at room temperature?

1

What is the chemical symbol for lead?

1

The "staircase" line on the periodic table primarily separates:

1

Which of the following is a typical property of metals?

1

Which of the following is a typical property of non-metals?

1

An element is shiny, conducts electricity well, and can be bent easily. This element is most likely a:

1

What is formed when two or more different elements are chemically joined together?

1

When iron filings and sulfur powder are heated strongly together, they:

1

Why can a mixture of sand and water be separated by filtration, but the hydrogen and oxygen in water cannot?

1

What is the name of the compound formed between magnesium (Mg) and bromine (Br)?

1

What is the name of the compound with the formula Na2SO4?

1

Following the rules for naming simple compounds, what would be the likely name for the compound K2O?

1

Which of the following substances exists as molecules?

1

Which of the following elements exists as a molecule containing two atoms joined together (diatomic)?

1

What is the name of the compound with the formula NO?

1

What is the name of the compound with the formula PCl3?

1

A diagram shows several separate circles of the same colour. This diagram most likely represents:

1

A diagram shows two different coloured circles joined together. This represents:

1

A diagram shows a collection of separate red circles and separate blue circles. This represents:

1

If you were to draw a molecule of carbon dioxide (CO2), how many oxygen atoms would be bonded to each carbon atom?

1

Which of the following gases is present in the smallest percentage in the Earth's atmosphere today?

1

Compared to pure water, a mixture of salt and water will generally have a:

1

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?

1

What is shown in each of these diagrams?

1

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?


1

By what percentage would we expect the volume to decrease?

1

If we started with 100 cm3 of air what volume of nitrogen would we end up with?


1

If we started with 100 cm3 of air what percentage of nitrogen would we end up with?