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EOT G12 Biology Revision Term 1

EOT G12 Biology Revision Term 1

Assessment

Presentation

•

Biology

•

12th Grade

•

Medium

Created by

Meeta Goklani

Used 3+ times

FREE Resource

0 Slides • 36 Questions

1

Multiple Choice

Question image
Attractions between water molecules are called
1
Covalent bonds
2
Ionic bonds
3
Polar bonds
4
Hydrogen bonds

2

Multiple Choice

What type of charge does oxygen have in a water molecule?
1
negative
2
positive
3
neutral

3

Multiple Choice

The __________________ is a property of a system in which two points have opposite characteristics, such as charges (positive/negative) or magnetic poles.

1

polarity

2

opposites

3

cohesion

4

adhesion

4

Multiple Choice

Water molecules are polar molecules. What is meant by the term polar molecule?

1

a molecule that has no charge on one end and either an overall negative or positive charge on the other end

2

a molecule that has an overall positive charge on one end, as well as an overall positive charge on the other end

3

a molecule that has an overall negative charge on one end, as well as an overall negative charge on the other end

4

a molecule that has an overall positive charge on one end and an overall negative charge on the other end

5

Multiple Choice

A water molecule contains two hydrogen atoms and one oxygen atom. Which of the following statements about water molecules is true?

1

The oxygen atom is negatively charged and the hydrogen atoms are positively charged.

2

The oxygen atom is positively charged and the hydrogen atoms are negatively charged.

3

All of the atoms have a negative charge.

4

All of the atoms have a positive charge.

6

Multiple Choice

Question image
A water strider can skate along the top of a pond because:
1
covalent bonds result in water cohesion
2
hydrogen bonds result in water cohesion (surface tension)
3
water striders have adapted to take advantage of water cohesion
4
low surface tension of water

7

Multiple Choice

Question image
Why can water have no net charge but have slight charges in different parts of the molecule?
1
The oxygen end is slightly negative and the hydrogen end is slightly positive
2
The hydrogen end is slightly negative and the oxygen end is slightly positive
3
The hydrogen and oxygen ends change in polarity
4
Because it is hydrophobic

8

Multiple Choice

Question image
Attractions between water molecules are called
1
Covalent bonds
2
Ionic bonds
3
Polar bonds
4
Hydrogen bonds

9

Multiple Choice

6. Your science teacher showed in class a bowl of fruit and vegetables

salad. Your classmate examined the mixture and was able to

distinguish fruits from vegetables. What type of mixture was presented

by your teacher?

1

A. colloid

2

B. heterogeneous (Non-Uniform)

3

C. homogeneous (Uniform)

4

D. solution

10

Multiple Choice

Question image

Oil and water

1

Homogeneous Mixture

2

Heterogeneous Mixture

11

Multiple Choice

Saliva is

1

Homogenous

mixture

2

Heterogeneous

mixture

12

Multiple Choice

Air is a solution of gases so it is

1

Homogeneous

mixture

2

Heterogeneous

mixture

13

Multiple Select

Which is a heterogenous mixture

1

sand and water

2

drink mix in water

3
4

14

Multiple Choice

The pH scale is used to know what?

1

Your temperature

2

Know one knows

3

The colors of acids and bases

4

The strength of acids and bases

15

Multiple Choice

Acids have a pH of _______________.

1

below 7

2

above 7

3

exactly 7

16

Multiple Choice

Bases have a pH of _______________.

1

below 7

2

above 7

3

exactly 7

17

Multiple Choice

Neutral solutions have a pH of _______________.

1

below 7

2

above 7

3

exactly 7

18

Multiple Choice

What ions are there more of in acidic solutions?

1

H+ (H3O+)

2

OH-

19

Multiple Choice

What ions are there more of in basic solutions?

1

H+ (H3O+)

2

OH-

20

Multiple Choice

Substance with Hydrogen ion is

1

acidic solution

2

Basic solution

21

Multiple Choice

Substance with Hydroxyl ion is

1

acidic solution

2

basic solution

22

Multiple Select

Question image

which of the following is a physical change?

1

A

2

B

3

C

4

D

23

Multiple Choice

Question image

what is shown in the image?

1

amino acid

2

nucleotide

3

glucose

4

protein

24

Multiple Choice

In an endothermic reaction, heat is ...

1

taken in

2

given out

25

Multiple Choice

In an exothermic reaction, heat is ...
1
taken in
2
given out

26

Multiple Choice

If a chemical reaction is EXOTHERMIC, the temperature would....
1
Stay the same
2
Increase
3
Decrease

27

Multiple Choice

Question image
Baking bread and cooking an egg are examples of....?
1
Endothermic processes
2
Exothermic processess
3
None of these 

28

Multiple Choice

Question image
What type of reaction is shown in the photo?
1
Exothermic
2
Isothermic
3
Endothermic
4
None of the  above

29

Multiple Choice

O2(g) + 2 H2 (g) → 2 H2O (g) + EnergyO_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy  

1

endothermic

2

exothermic

30

Multiple Choice

Question image

What does this image shows?

1

Chemical reaction

2

isotopes

3

elements

4

polar moleules

31

Multiple Choice

In which of the following are bonds broken and new bonds are formed?

1

chemical reactions

2

isotopes

3

elements

4

polar molecules

32

Multiple Choice

A chemical reaction is a process by which atoms or groups of atoms in substances are

1

Reorganized into different substances

2

Dissolved in other substances

3

Mixed together with atoms in other substances

4

Ionized by the loss of protons

33

Multiple Choice

Question image

What does this image show?

1

covalent bond

2

physical property

3

Van der waals forces

4

chemical reaction

34

Multiple Choice

Is water a polar or a non-polar molecule? 
1
Polar
2
Non-polar

35

Multiple Choice

Energy needed to get a reaction started is called

1

activation energy.

2

Power Energy

3

Nuclear Energy

4

None

36

Multiple Choice

Question image

Look at the figure. Determine what the upward curve represents.

1

Activation energy

2

reactants

3

products

4

enzymes

Question image
Attractions between water molecules are called
1
Covalent bonds
2
Ionic bonds
3
Polar bonds
4
Hydrogen bonds

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