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2021 CA 1 Sci

Total questions: 40

Worksheet time: 30mins

Name
Class
Date
1.

What is the formula for Density? (REMEMBER: D= <3)

a)

D= Mass / Volume

b)

D= Mass X Volume

c)

D= Volume / Mass

d)

D= Volume X Mass

2.

Is burning sugar a...

a)

Chemical Reaction

b)

Physical Reaction

3.

Ripping cardboard is an example of

a)

Physical Change

b)

Chemical Change

4.

How do you know a chemical reaction takes place?

a)

Something new is made

b)

Changes Color

c)

Changes Temp

d)

Bubbles or Steams

e)

ALL of the ABOVE

5.

Is NaCl an element or compound?

a)

Element

b)

Compound

c)

Both

6.

Is 02 a element or compound

a)

Element

b)

Compound

7.
The variable the is changed on purpose is..
a)
Constant
b)
Control
c)
Independent Variable
d)
Dependent Variable
8.
The variable that is being tested, counted, or measured and is responding to the independent variable is known as 
a)
Control
b)
Constant
c)
Independent Variable
d)
Dependent Variable
9.
Plants grow best in colored light. What is the independent variable of this statement?
a)
Plant Growth
b)
Colored Light
10.

The cat weighs six pounds

a)

qualitative

b)

quantitative

11.

The cat has black fur and green eyes

a)

qualitative

b)

quantitative

12.

Which statement is an inference?

a)

The lightbulb is broken

b)

The lightbulb is grey and white

c)

The lightbulb was broken by Mr. Spencer

13.

Is this an element or a compound?

a)

Element

b)

Compound

14.

Is this an element or a compound?

a)

element

b)

compound

15.

What type of substance is Si (Silicone) ?

a)

Metal

b)

Metalloid

c)

Nonmetal

16.

Select all the compounds

a)
b)
c)
d)
17.

How many ELEMENTS are in the chemical formula:

C10H12N2O

a)

3

b)

4

c)

5

d)

2

18.

Select the ELEMENTS

a)

C

b)

IV

c)

Nar

d)

Ar

19.

What kind of substance is Sulfur (S)?

a)

Metal

b)

Metalloid

c)

Nonmetal

20.

Which of the following represents an element?

a)

H2O

b)

NaCl

c)

H2

d)

CaCO3

21.

Which of the following is not a compound?

a)

HCl

b)

NaCl

c)

Cl

d)

CO2

22.

Salt has a chemical formula of NaCl. Salt is a...

a)

Compound

b)

Mixture

c)

Element

d)

None of the Above

23.

What cannot be broken down into other substances?

a)

Compound

b)

Solids

c)

Mixture

d)

Element

24.

What is made up two or more elements that are chemically combined?

a)

Element

b)

Compound

c)

Mixture

d)

Solids

25.

How many elements are represented in the compound?

Na2CO3

a)

1

b)

2

c)

3

d)

4

26.

This picture represents which of the following?

a)

element

b)

mixture

c)

compound

27.

What is the picture displayed?

a)

atom

b)

molecule

c)

element

d)

compound

28.

Are there any compounds on the periodic table?

a)

Yes,there are many.

b)

No,because only elements are on the periodic table.

29.

Which statement best describes an element?

a)

pure, made of more than one type of atom

b)

when combined, a chemical reaction forms

c)

pure, made of only one type of atom

d)

can be broken down easily

30.
Which one can be found on the periodic table?
a)
Compound 
b)
Element
31.

Helium (He) is an example of an:

a)

Element

b)

Compound

c)

Solution

d)

Mixture

32.

When two or more different elements chemically combine, a __________________________ is formed.

a)

element

b)

compound

c)

mixture

d)

solution

33.

Examples are water (H2O) and carbon dioxide (CO2).

a)

elements

b)

compounds

34.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
35.
Which of these grouping of elements could have the characteristic of brittle?
a)
Metal
b)
Nonmetal
36.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
37.
Some characteristics of a metal are that it is malleable and ductile.
a)
TRUE
b)
FALSE
38.
Iron is a good conductor, malleable and magnetic. What type of element is Iron? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
39.
Anytime you see the word SEMICONDUCTOR - what substance do you have?
a)
Metal
b)
Nonmetal
c)
Metalloid
40.

Fill in the blank: Nonmetals have a ___________ surface, and they do not conduct heat or electricity.

a)

electricity

b)

dull

c)

changed

d)

luster

e)

metals

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