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Worksheets1ST UNIT ASSESSMENT IN SCIENCE 6
Total questions: 25
Worksheet time: 13mins
The smallest particle of an element that retains the properties of that element.
Atom
Compound
Element
Molecule
A pure substance made of only one kind of atom and cannot be broken down into simpler substances.
Atom
Compound
Element
Molecule
A substance made up of atoms of two or more different elements joined by chemical bonds.
Atom
Compound
Element
Molecule
How many elements are in a molecule of caffeine?
4
24
8
16
Which is a compound?
NaOH
Fe
N
He
Which of the following pairs of substances may best be separated through distillation?
sand and soil
water and soil
salt and sand
water and alcohol
Nitrogen is a common element. If the atomic weight of nitrogen is 14, and it has 7 neutrons then how many electrons does N have?
8
7
14
5
The method that can be used for separation of larger solid from smaller or fines.
sieving
decanting
filtration
evaporation
What will happen if you shake the oil and water in a bottle and then left until it becomes stable again.
The water goes to the bottom and the oil stays on top.
The oil goes to the bottom and the water stays on top.
The water and oil mixed together.
It will evaporate.
The process of changing a liquid to a gas is called ..
evaporation
filtration
sieving
decanting
Mixed nuts, halo-halo and buko salad are examples of what kind of mixture?
gas
heterogeneous
homogeneous
liquid
What do you call the combination of two or more substances present in varied proportion where each materials are distinct and visibly seen by naked eyes?
compound
cream
mixture
water
Which of the following is an example of heterogeneous mixture?
corn oil
water and salt
water and sand
water and sugar
Which of the following best describes colloids?
clear, flawless substance
clear, pure substance
often seem cloudy
sticky, creamy substance
I. Air II. Fruit salad III. Salt solution IV. Pizza
Which of the following material(s) are homogenous mixture(s)?
I and II
I only
I and III
II and IV
I. Air II. Fruit salad III. Salt solution IV. Pizza
Which of the following material(s) are heterogeneous mixture(s)?
I and II
I only
I and III
II and IV
I. Colloid II. Suspension III. Solution IV. Salt and pepper
Which is TRUE about homogenous mixture?
I, II, and III
I and III only
All of the above
IV only
I. Colloid II. Suspension III. Solution IV. Salt and pepper
Which is TRUE about heterogeneous mixture?
I, II, and III
I and II only
All of the above
II and IV only
What are the components that can be identified in a halo-halo ?
A. orange, apple, lemon, grape
gulaman, ube, mango, sago
mayonnaise, eggplant,
cereals, bitter gourd, peanut
When you mixed the salt and water, will you still recognize the salt in the water?
Yes, because it is visible
No, because it will dissolved
Maybe
None of the above.
What is the chemical symbol for magnesium?
Mn
Magnesium
Mg
Sn
Use the periodic table to determine the Chemical symbol for Iron.
Ir
FE
Fe
I
Is water an element or a compound?
Element
Compound
both A and B
None of these
Which of these will not form a solution?
preparing syrup
mixing water and sugar
preparing a cup of tea
stirring a spoonful of salt and water
How can you separate the components of mixed nuts?
through decantation
through the use of magnet
through physical manipulation
through distillation
