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year 7 Science Homework Week 5
By Naomi Arthur
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Last updated over 4 years ago
13 questions
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Question 1
1.
Which substance is made of only one type of atom?
Element
Atom
compound
mixture
Question 2
2.
Which substances contain two or more different types of atoms chemically bonded together?
Element
atom
compound
mixture
Question 3
3.
What is the smallest part of an element that can exist?
Element
atom
compound
mixture
Question 4
4.
What does diatomic means?
Three atoms chemically bonded
Two atoms chemically bonded
Two compounds chemically bonded
Question 5
5.
How would you separate compounds?
Chemical Reaction
Physical Process
Burn it
Question 6
6.
What is a “pure substance”?
Only contain two types of element or compound
Only contains one type of element or compound
Only contains one type of compound
Question 7
7.
What type of substance contains only two or more types of atom that are chemically bonded?
Element
Compound
Mixture
Question 8
8.
What type of substance contains only one type of atom?
Element
Compound
Mixture
Question 9
9.
How would you separate mixtures?
Chemical Reaction
Physical Process
Burn it
Question 10
10.
Which process transports minerals against the concentration gradient.
Osmosis
Diffusion
Active transport
Question 11
11.
Diffusion is the spreading out of particles resulting in a net movement from an area of ..................... to an area of low concentration
Higher concentration
low concentration
the same
distance
Question 12
12.
the difference between an area of higher concentration and an area of lower concentration is known as a.........
Temperature
less concentrated
concentration gradient
thin
Question 13
13.
increasing the................... increases the rate of diffusion
Stop
temperature
time
diffusion