Free Printable Chemistry Recap (Year 9 Sci)

Worksheets

Chemistry Recap (Year 9 Sci)

Total questions: 20

Worksheet time: 17mins

Name

Class

Date

This picture represents which of the following?

element

compound

This picture represents which of the following?

element

compound

Which of the following is a chemical compound?

CO₂

Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is ---

a gas at room temperature.

made of two different elements.

given off by green plants.

useful to human beings

A section of the Periodic Table is shown. What is the Chemical Symbol for Magnesium?

Magnesium

24.31

The smallest particle of any particular type of matter is known by which of the following terms?

Element

Chemical

Atom

Compound

Is Iron (Fe) an element or a compound?

Element

Compound

Small positively charged particles that are found in the nucleus of an atom

neutron

ion

proton

electron

How many elements are in C₆H₁₂O₆?

10.

True or False? Neutrons have a negative charge

True

False

11.

the central region of an atom where its neutrons and protons are is its

nucleus

electron cloud

core

center

12.

all matter is made of what

energy

atoms

electrons

compounds

13.

The negatively charged particles of an atom are the ______.

electrons

protons

neutrons

protons & neutrons

14.

What number indicates an electron?

15.

How are elements on the periodic table arranged by?

in alphabetic order

simular physical & chemical properties

their symbols

Just simular physical properties

16.

Each column in the periodic table is called a _________ .

period

group

cluster

unit

17.

Periods on the periodic table are __________.

Horizontal Rows

Vertical Columns

18.

The Atomic number is known as the _______

Number of electrons in an atom

Number of Protons in an atom

Number of neutrons in an atom

Number of Protons and electrons in an atom

19.

Metals

Nonmetals

Metalloids

20.