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Chemistry

Total questions: 38

Worksheet time: 38mins

Name
Class
Date
1.

what is an atom

a)

smallest part of the universe

b)

smallest part of a substance

c)

smallest part of anything

d)

smallest part of water

2.

protons

a)

negative charge, nucleus

b)

positive charge, shells

c)

positive charge , nucleus

d)

neutral charge, nucleus

3.

neutrons

a)

no charge, shells

b)

positive charge, nucleus

c)

neutral, no charge, nucleus

d)

negative charge, shells

4.

electrons

a)

no charge, nucleus

b)

positive charge, nucleus

c)

negative charge, shells

d)

negative charge, nucleus

5.

atomic number

a)

number of protons/stands for an element

b)

number of neutrons

c)

number of electrons

d)

number of protons and neutrons

6.

mass number

a)

number of protons

b)

number of electrons

c)

number of protons and electrons

d)

number of protons and neutrons

7.

atomic symbol

a)

capital letter

b)

lowercase letter

c)

2 capital letters

d)

2 lowercase leters

8.

same number of protons, different number of neutrons

a)

atomic number

b)

mass number

c)

isotope

d)

ion

9.

a charged atom

a)

neutral

b)

isotope

c)

ion

d)

nucleus

10.
The characteristics or properties of metals include
a)
shiny and solid
b)
ductile and malleable
c)
lose electrons
d)
all of the above
11.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
12.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
13.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
14.
Water is an element?
a)
true
b)
false
15.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
16.
What is a product?
a)
The starting substance
b)
The ending substance
17.
What is a reactant?
a)
The starting substance
b)
The ending substance
18.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the reactant(s).
a)
Hydrogen and Oxygen
b)
water
19.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the product(s).
a)
Hydrogen and oxygen
b)
water
20.
Burning is always a chemical reaction.
a)
True
b)
false
21.
Sandra was burning a vanilla candle. Was there a chemical reaction?
a)
no, because burning is never a chemical reaction.
b)
Yes, because the properties of the wick changed.
c)
yes, because heat was added.
d)
no, because the ash formed was a different substance.
22.
Which of the following is NOT a chemical reaction?
a)
burning a marshmallow in a campfire.
b)
a campfire
c)
acid rain turning a copper roof green.
d)
Dissolving red Koolaid in water.
23.
Which of the following is a chemical reaction?
a)
Burning bread in the toaster.
b)
melting wax in a microwave.
c)
dissolving salt in water
d)
boiling water to make steam.
24.

Which occurs when atoms link together in news ways to create a substance different from the original substances?

a)

A physical change

b)

A nuclear reaction

c)

a chemical change

d)

an inversion

25.

Which of the following indicate that a chemical reaction has occurred?

a)

The formation of gas bubbles

b)

An odor

c)

a change in color

d)

all of these indicate a chemical reaction

26.

Which of the following indicate that a chemical reaction has occurred?

a)

The formation of gas bubbles

b)

An odor

c)

a change in color

d)

all of these indicate a chemical reaction

27.

What is needed for a combustion reaction to occur?

a)

Nitrogen

b)

Helium

c)

oxygen

d)

iron

28.

Mixing food coloring with water is an example of a chemical change.

a)

True

b)

False

29.

Which is an example of a chemical reaction?

a)

Ice melting

b)

wood burning

c)

salt stirred into water

d)

rain falling

30.
What is matter
a)
Anything which is solid
b)
Anything that takes up space and has mass
c)
when something is wrong
31.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
32.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
33.
Air is an example of a(n)
a)
element
b)
compound
c)
heterogenous mixture
d)
homogenous mixture
34.
Elements in a compound can be separated __________
a)
physically
b)
chemically
35.
who developed the modern day periodic table of elements?
a)
Darwin
b)
Shultz
c)
Hooke
d)
Mendeleev
36.
On the Periodic Table each element increases by one _________
a)
electron
b)
proton
c)
neutron
d)
letter
37.
In this type of bond electrons are shared by two non-metals
a)
ionic
b)
covalent
c)
subatomic
38.

Metalloids are _________________________.

a)

a chemical element with properties intermediate between those of typical metals and nonmetals.

b)

a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).

c)

a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity

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