Chemistry 1

1.

1 point

Which of the following is a type of mixture?

an element

a pure substance

a compound

a solution

2.

1 point

Which of the following is NOT a physical property of metals?

They do not transmit heat easily.

They have the ability to conduct electricity.

They can be hammered into shape.

They can be pulled into think wire.

3.

1 point

Which of the following is an example of a homogeneous mixture?

toss salad

Raisin Bran cereal

Supreme pizza

black coffee

4.

1 point

Table salt has the chemical formula NaCI. Which elements make up table salt?

nitrogen and chlorine

sodium and chlorine

sodium, carbon, and aluminum

nitrogen, aluminum, chlorine, and lithium

5.

1 point

What forms when the atoms of two or more different elements combine chemically?

a chemical formula

an element

a compound

an atom

6.

1 point

Which of these is NOT a physical property of nonmetals?

luster

brittle

nonconductors

dull surface

7.

1 point

What is the symbol for the substance that is in period 4, group 14?

Ge

B

Zn

Al

8.

1 point

C6H12O6 is the chemical formula for simple sugar. Which element is NOT found in simple sugar?

carbon

hydrogen

helium

oxygen

9.

1 point

Which of these is a physical property of metals?

brittleness

dullness

high density

nonconductor

10.

1 point

What is the smallest particle of an element that still has all the properties of the element?

a solution

an atom

a molecule

a mixture

11.

1 point

Which of these is used to order the elements in the periodic table?

atomic numbers

atomic masses

chemical symbols

atomic familites

12.

1 point

What are molecules made of?

atoms

electrons

mixtures

compounds

13.

1 point

A chemical equation shows that two elements combine. What type of product is formed?

a mixture

another element

a compound

a reactant

14.

1 point

H2O is an example of which of the following?

homogeneous mixture

heterogeneous mixture

element

compound

15.

1 point

What is each element made of?

Many different atoms

One kind of atom

The same atoms as every other element

Three kinds of atoms

16.

1 point

What is the term for a horizontal row in the periodic table of elements?

group

family

period

metal

17.

1 point

What is the atomic number for lead?

Period 6, group 14

Pb

207.2

82

18.

1 point

The chemical symbol for water is H2O. What atoms make up a molecule of water?

two helium atoms and one oxygen atom

two hydrogen atoms and one oxygen atom

one helium atom and two oxygen atoms

one hydrogen atom and two oxygen atoms

19.

1 point

What is the smallest particle of an element?

an atom

a molecule

a mixture

a compound

20.

1 point

When two of more substances are in the same place but NOT chemically combined, what do they form?

a molecule

a mixture

an element

a compound

21.

1 point

Which is NOT a property of solid metals?

malleability

luster

poor electrical conductor

ductility

22.

1 point

Which elements are located to the right of the zigzag line of the periodic table of elements?

solids

metals

liquids

nonmetals

23.

1 point

Which of the following elements would have properties most similar to lead?

Gold

Silver

Bismuth

Tin

24.

1 point

Which of the following is an example of a heterogeneous mixture?

brass

kool-aid

vegetable soup

air

25.

1 point

The element potassium is located on the left side of the periodic table. What does this tell you about potassium?

It is a metal.

It is a gas.

It is a nonmetal.

It is liquid.