Basics of Chemistry

Basics of Chemistry Worksheet-1

1. What is the purest and most simple form of all matter?

(a) solution        (b) gas                (c) element        (d) compound

2. What is a compound?

(a) A substance that is made by the chemical combination of two or more elements.

(b) A substance that is made by the physical collection of two or more elements.

(c) A substance that is made by heating a single element.

(d) A mixture that is made by heating a single element in vacuum.

Basics of Chemistry Worksheet-2

1. A compound is made by chemically combining two or more elements. Properties of a compound are ______ from the properties of elements it contains.

(a) doubled       (b) added           (c) same             (d) different

2. How can you break a compound into its simpler elements?

(a) By physical reactions.           (b) By chemical reactions.

(c) By force.                                    (d) It can not be done.

Basics of Chemistry Worksheet-3

1. A table that groups and displays elements in a systematic manner is called __________.

(a) book of elements                    (b) catalog

(c) periodic table                           (d) element table

2. Which of the following is the smallest part of an element?

(a) Molecule     (b) Atom            (c) Metal           (d) Compound