WorksheetsMRC Y8 Chemistry W2-4
Total questions: 23
Worksheet time: 15mins
An Electron has ____________.
a Positive charge
a Negative charge
a Neutral charge
No charge
A periodic table arranges atoms in rows and columns. What names are given to these rows and columns?
The rows are groups and the columns are periods
The rows are shells and the columns are groups
The rows are periods and the columns are groups
The rows are periods and the columns are shells
An atom of an elements has the electronic configuration of 2,8,8,2. What is its atomic number?
16
18
2882
20
An atom of an elements has the electronic structure of 2,8,7. Which group of the periodic table is it in?
8
7
2
28
An atom with atomic number 6 would have how many protons
12
6
3
cannot be determined
All mater is made up of what?
electrons
energy
atoms
compounds
Atomic Mass is the number of __________
protons and electrons in the nucleus of an atom
protons and neurons in the nucleus of an atom
neutrons and electrons in the nucleus of an atom
A molecule is
a singular particle of a particular element
another name for an element
2 or more atoms that are combined
consists of 2 or more elements that are combined
Particles always ________________ each other, this gets stronger as the particles get ___________________.
attract, farther apart
attract, closer together
repel, farther apart
repel, closer together
What state of matter is this?
Solid
Liquid
Gas
None of the above
Number 2 represents a ________
solid
gas
liquid
plasma
What am I? I have a fixed mass, a fixed volume, I cannot be squashed and I have a shape that changes to fit the bottom of my container?
plasma
gas
liquid
solid
An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon?
The particles move faster and become further apart.
The particles move faster and become closer together.
The particles move more slowly and become further apart.
The particles move more slowly and become closer together.
Which point of the particle theory is depicted by this picture?
all matter is made of particles
particles are in constant, random motion
different substances are made of different types of particles
particles speed up as heat is added and slow down as heat is removed
What are the products of the chemical reaction pictured?
CO2 and H2O
CH4 and CO2
CH4 and O2
O2 and H2O
Identify the reactant(s) and product(s) of the reaction.
All three are reactants and none are products.
Hydrogen and water are the reactants, and oxygen is the product.
Hydrogen and oxygen are the reactants, and water is the product.
Water and oxygen are the reactants, and hydrogen is the product.
The reactants are on the left side of the chemical equation.
True
False
2H2 + O2 ----> 2H2O What is the product?
2H2O
------>
2H2+ O2
2H2
What do we call a substance consisting of a single atom?
coefficient
element
compound
molecule
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
atom
compound
molecule
element
When an atom loses a valence electron, it becomes a(n) _____________ ion.
positive
negative
neutral
How many electrons does this magnesium ion have?
10
24
12
14
What is the atomic number of this atom?
4
5
9
12
