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Worksheets

Mixed-3

Total questions: 49

Worksheet time: 28mins

Name
Class
Date
1.

Lead (Pb), silver (Ag), and iron (Fe) are examples of

a)

Pure substances

b)

Compounds

c)

Homogeneous Mixtures

d)

Heterogeneous Mixtures

2.

Substances can be classified as elements, compounds or mixtures. Which of these is the formula for a molecule of an element?

a)

H

b)

H2

c)

H2O

d)

H2O2

3.

Which of these is a mixture?

a)

sodium (Na)

b)

chlorine (Cl2)

c)

sodium chloride (NaCl)

d)

sodium chloride aqueous solution

4.

Two or more elements CHEMICALLY combined are called

a)

mixtures

b)

elements

c)

compounds

d)

solids

5.

Which of the following is NOT a compound?

a)

Limestone (CacO3)

b)

Oxygen (O2)

c)

Vinegar (CH3COOH)

d)

Water (H2O)

6.

What does the above image represent?

a)

element

b)

mixture of elements

c)

mixture of compounds

d)

mixture of compounds and elements

7.

In the shells of atom, there are an (a)  

8.

In the (a)   of atom, there are protons and neutrons.

9.

This picture is the example of (a)  

10.

The atomic number of Ge (a)  

11.

The maximal number of electron in the second shells (L shells) (a)  

12.

The maximal number of electron in the fourth shells (N shells) (a)  

13.

The maximal number of electron in the fifth shells (O shells) (a)  

14.

Atoms with fewer than 4 valence electrons will form a postitive ion. We can called it (a)  

15.

Which is not a state of matter?

a)

Liquid

b)

Solid

c)

Gravity

d)

Gas

16.

____________ is anything that is made up of atoms, takes up space and has mass.

a)

Elements

b)

Compounds

c)

Chemistry

d)

Matter

17.

________ Is how compacted a substance is.

a)

Texture

b)

Color

c)

Odor

d)

Density

18.

A solid

a)

has particles that are far apart

b)

has a size and shape of its own

c)

takes the shape of its container

19.

The smallest part of matter and makes up molecules

a)

is an atom

b)

is a molecule

c)

is a gas

d)

is matter

20.

In a _______ the molecules are close together.

a)

solid

b)

liquid

c)

gas

21.

An example of a solid is

a)

a desk

b)

oxygen

c)

water

d)

juice

22.

A ________ has no shape and no size.

a)

gas

b)

liquid

c)

solid

23.

One similarity between solids, liquids and gases is

a)

all three have atoms and molecules

b)

all three have molecules that are close together

c)

all three take the shape of their containers

24.

A substance's _____________________ is when it changes from a solid to a liquid

a)

boiling point

b)

freezing point

c)

melting point

d)

triangle point

25.

A substance's ________________ is when it changes from a liquid to a gas

a)

boiling point

b)

melting point

c)

freezing point

d)

triangle point

26.

A substance's ______________ is when it changes from a liquid to a solid

a)

melting point

b)

boiling point

c)

freezing point

d)

triangle point

27.

Boyle's law tells us that when volume increases at a constant temperature.........

a)

temperature decreases

b)

pressure increases

c)

pressure decreases

d)

temperature increases

28.

Charles' Law tells us that when temperature increases at a constant pressure.......

a)

volume decreases

b)

volume increases

c)

pressure decreases

d)

pressure increases

29.

What is the phase change called when a liquid becomes a solid?

a)

freezing

b)

sublimation

c)

condensation

d)

melting

30.

What type of solid does not have a distinct particle pattern and does not have a distinct melting point?

a)

amorphous solid

b)

crystalline solid

c)

amazing solid

d)

sublime solid

31.

Scientific thinking: When conducting experiments, what is a variable that stands alone and isn't changed by the other variables you are trying to measure?

a)

Independent variable

b)

Dependent Variable

c)

All variables

d)

No variables

32.

A directly proportional relationship is when:

a)

both go up or both go down

b)

one goes up and the other goes down

c)

sometimes they both go up but sometimes one goes up and the other goes down

33.

Which family is found to the left of the stair step line?

a)

metals

b)

nonmetals

c)

metalloids

d)

semiconductors

34.

molecule that consists of two atoms of the same element, joined by a covalent bond

a)

diatomic molecule

b)

allotrope

c)

metallic bonding

d)

transition element

35.

property of metals and alloys that allows them to be drawn into wires

a)

ductile

b)

malleable

c)

metallic bonding

d)

transition element

36.

property of metals and alloys that allows them to be hammered or rolled into thin sheets

a)

malleable

b)

ductile

c)

metallic bonding

d)

metalloid

37.

elements that share some properties with metals and some with nonmetals

a)

metalloid

b)

transition element

c)

transuranium element

d)

radioactive element

38.

element that usually is a gas or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and typically is not shiny

a)

nonmetal

b)

metal

c)

metalloid

d)

semiconductor

39.

material that conducts an electric current under certain conditions

a)

semiconductor

b)

malleable

c)

ductile

d)

metallic bonding

40.

elements in groups 3-12 of the periodic table

a)

transition element

b)

transuranium element

c)

radioactive element

d)

metal

41.

elements having more than 92 protons, all of which are synthetic and unstable

a)

transuranium element

b)

transition element

c)

radioactive element

d)

semiconductor

42.

metals can be hammered or rolled into sheets

a)

ductile

b)

malleable

c)

metallic luster

d)

metallic bonding

43.

Which element does not belong in group 1?

a)

sodium

b)

hydrogen

c)

potassium

d)

lithium

44.

In chemical reactions, metals tend to _____ electrons

a)

gain

b)

share

c)

lose

d)

metals don't bond

45.

when nonmetals gain electrons from metals, they become the _____ ion

a)

postive

b)

negative

46.

When a metal and a nonmetal bond to form a compound

a)

ionic bond

b)

covalent bond

c)

metallic bonding

d)

diatomic molecule

47.

Group 1 on the periodic table

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

boron family

48.

Group 2 on the periodic table

a)

alkali metals

b)

alkaline earth metals

c)

transition metals

d)

halogens

49.

elements in groups 3-12 on the periodic table

a)

transition metals

b)

lanthanides

c)

actinides

d)

alkali metals

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